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Bernauer JC, Schmidt A, Henderson BS, Ice LD, Khaneft D, O'Connor C, Russell R, Akopov N, Alarcon R, Ates O, Avetisyan A, Beck R, Belostotski S, Bessuille J, Brinker F, Calarco JR, Carassiti V, Cisbani E, Ciullo G, Contalbrigo M, De Leo R, Diefenbach J, Donnelly TW, Dow K, Elbakian G, Eversheim PD, Frullani S, Funke C, Gavrilov G, Gläser B, Görrissen N, Hasell DK, Hauschildt J, Hoffmeister P, Holler Y, Ihloff E, Izotov A, Kaiser R, Karyan G, Kelsey J, Kiselev A, Klassen P, Krivshich A, Kohl M, Lehmann I, Lenisa P, Lenz D, Lumsden S, Ma Y, Maas F, Marukyan H, Miklukho O, Milner RG, Movsisyan A, Murray M, Naryshkin Y, Perez Benito R, Perrino R, Redwine RP, Rodríguez Piñeiro D, Rosner G, Schneekloth U, Seitz B, Statera M, Thiel A, Vardanyan H, Veretennikov D, Vidal C, Winnebeck A, Yeganov V. Measurement of the Charge-Averaged Elastic Lepton-Proton Scattering Cross Section by the OLYMPUS Experiment. Phys Rev Lett 2021; 126:162501. [PMID: 33961478 DOI: 10.1103/physrevlett.126.162501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 03/17/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
We report the first measurement of the average of the electron-proton and positron-proton elastic scattering cross sections. This lepton charge-averaged cross section is insensitive to the leading effects of hard two-photon exchange, giving more robust access to the proton's electromagnetic form factors. The cross section was extracted from data taken by the OLYMPUS experiment at DESY, in which alternating stored electron and positron beams were scattered from a windowless gaseous hydrogen target. Elastic scattering events were identified from the coincident detection of the scattered lepton and recoil proton in a large-acceptance toroidal spectrometer. The luminosity was determined from the rates of Møller, Bhabha, and elastic scattering in forward electromagnetic calorimeters. The data provide some selectivity between existing form factor global fits and will provide valuable constraints to future fits.
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Affiliation(s)
- J C Bernauer
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Schmidt
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - B S Henderson
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - L D Ice
- Arizona State University, Tempe, Arizona 85287, USA
| | - D Khaneft
- Johannes Gutenberg-Universität, Mainz, Germany
| | - C O'Connor
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R Russell
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - N Akopov
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
| | - R Alarcon
- Arizona State University, Tempe, Arizona 85287, USA
| | - O Ates
- Hampton University, Hampton, Virginia 23668, USA
| | - A Avetisyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
| | - R Beck
- Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - S Belostotski
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - J Bessuille
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - F Brinker
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - J R Calarco
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - V Carassiti
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, Ferrara, Italy
| | - E Cisbani
- Istituto Nazionale di Fisica Nucleare sezione di Roma and Istituto Superiore di Sanità, Rome, Italy
| | - G Ciullo
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, Ferrara, Italy
| | - M Contalbrigo
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, Ferrara, Italy
| | - R De Leo
- Istituto Nazionale di Fisica Nucleare sezione di Bari, Bari, Italy
| | - J Diefenbach
- Hampton University, Hampton, Virginia 23668, USA
| | - T W Donnelly
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - K Dow
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - G Elbakian
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
| | - P D Eversheim
- Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - S Frullani
- Istituto Nazionale di Fisica Nucleare sezione di Roma and Istituto Superiore di Sanità, Rome, Italy
| | - Ch Funke
- Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - G Gavrilov
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - B Gläser
- Johannes Gutenberg-Universität, Mainz, Germany
| | - N Görrissen
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - D K Hasell
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Hauschildt
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - Ph Hoffmeister
- Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - Y Holler
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - E Ihloff
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Izotov
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R Kaiser
- University of Glasgow, Glasgow, United Kingdom
| | - G Karyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
| | - J Kelsey
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Kiselev
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - P Klassen
- Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - A Krivshich
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - M Kohl
- Hampton University, Hampton, Virginia 23668, USA
| | - I Lehmann
- University of Glasgow, Glasgow, United Kingdom
| | - P Lenisa
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, Ferrara, Italy
| | - D Lenz
- Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - S Lumsden
- University of Glasgow, Glasgow, United Kingdom
| | - Y Ma
- Johannes Gutenberg-Universität, Mainz, Germany
| | - F Maas
- Johannes Gutenberg-Universität, Mainz, Germany
| | - H Marukyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
| | - O Miklukho
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R G Milner
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Movsisyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, Ferrara, Italy
| | - M Murray
- University of Glasgow, Glasgow, United Kingdom
| | - Y Naryshkin
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | | | - R Perrino
- Istituto Nazionale di Fisica Nucleare sezione di Bari, Bari, Italy
| | - R P Redwine
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | | | - G Rosner
- University of Glasgow, Glasgow, United Kingdom
| | | | - B Seitz
- University of Glasgow, Glasgow, United Kingdom
| | - M Statera
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, Ferrara, Italy
| | - A Thiel
- Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - H Vardanyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
| | | | - C Vidal
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Winnebeck
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - V Yeganov
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan, Armenia
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Mascilini F, Moro F, De Leo R, Scambia G, Fagotti A, Testa AC. Intraoperative ultrasound assistance for surgical removal of lost intrauterine device. Ultrasound Obstet Gynecol 2019; 53:705-706. [PMID: 29947114 DOI: 10.1002/uog.19167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/13/2018] [Indexed: 06/08/2023]
Affiliation(s)
- F Mascilini
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario Agostino Gemelli-IRCSS, Rome, Italy
| | - F Moro
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario Agostino Gemelli-IRCSS, Rome, Italy
| | - R De Leo
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario Agostino Gemelli-IRCSS, Rome, Italy
| | - G Scambia
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario Agostino Gemelli-IRCSS, Rome, Italy
- Istituto di Ginecologia e Ostetricia, Università Cattolica del Sacro Cuore, Rome, Italy
| | - A Fagotti
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario Agostino Gemelli-IRCSS, Rome, Italy
- Istituto di Ginecologia e Ostetricia, Università Cattolica del Sacro Cuore, Rome, Italy
| | - A C Testa
- Istituto di Ginecologia e Ostetricia, Università Cattolica del Sacro Cuore, Rome, Italy
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Petrillo M, Marchetti C, De Leo R, Musella A, Capoluongo E, Paris I, Benedetti-Panici P, Scambia G, Fagotti A. BRCA mutational status to personalize upfront management in high-grade serous advanced ovarian cancer: A multicenter study. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Henderson BS, Ice LD, Khaneft D, O'Connor C, Russell R, Schmidt A, Bernauer JC, Kohl M, Akopov N, Alarcon R, Ates O, Avetisyan A, Beck R, Belostotski S, Bessuille J, Brinker F, Calarco JR, Carassiti V, Cisbani E, Ciullo G, Contalbrigo M, De Leo R, Diefenbach J, Donnelly TW, Dow K, Elbakian G, Eversheim PD, Frullani S, Funke C, Gavrilov G, Gläser B, Görrissen N, Hasell DK, Hauschildt J, Hoffmeister P, Holler Y, Ihloff E, Izotov A, Kaiser R, Karyan G, Kelsey J, Kiselev A, Klassen P, Krivshich A, Lehmann I, Lenisa P, Lenz D, Lumsden S, Ma Y, Maas F, Marukyan H, Miklukho O, Milner RG, Movsisyan A, Murray M, Naryshkin Y, Perez Benito R, Perrino R, Redwine RP, Rodríguez Piñeiro D, Rosner G, Schneekloth U, Seitz B, Statera M, Thiel A, Vardanyan H, Veretennikov D, Vidal C, Winnebeck A, Yeganov V. Hard Two-Photon Contribution to Elastic Lepton-Proton Scattering Determined by the OLYMPUS Experiment. Phys Rev Lett 2017; 118:092501. [PMID: 28306315 DOI: 10.1103/physrevlett.118.092501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Indexed: 06/06/2023]
Abstract
The OLYMPUS Collaboration reports on a precision measurement of the positron-proton to electron-proton elastic cross section ratio, R_{2γ}, a direct measure of the contribution of hard two-photon exchange to the elastic cross section. In the OLYMPUS measurement, 2.01 GeV electron and positron beams were directed through a hydrogen gas target internal to the DORIS storage ring at DESY. A toroidal magnetic spectrometer instrumented with drift chambers and time-of-flight scintillators detected elastically scattered leptons in coincidence with recoiling protons over a scattering angle range of ≈20° to 80°. The relative luminosity between the two beam species was monitored using tracking telescopes of interleaved gas electron multiplier and multiwire proportional chamber detectors at 12°, as well as symmetric Møller or Bhabha calorimeters at 1.29°. A total integrated luminosity of 4.5 fb^{-1} was collected. In the extraction of R_{2γ}, radiative effects were taken into account using a Monte Carlo generator to simulate the convolutions of internal bremsstrahlung with experiment-specific conditions such as detector acceptance and reconstruction efficiency. The resulting values of R_{2γ}, presented here for a wide range of virtual photon polarization 0.456<ε<0.978, are smaller than some hadronic two-photon exchange calculations predict, but are in reasonable agreement with a subtracted dispersion model and a phenomenological fit to the form factor data.
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Affiliation(s)
- B S Henderson
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - L D Ice
- Arizona State University, Tempe, Arizona 85281, USA
| | - D Khaneft
- Johannes Gutenberg-Universität, 55099 Mainz, Germany
| | - C O'Connor
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R Russell
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Schmidt
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J C Bernauer
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - M Kohl
- Hampton University, Hampton, Virginia 23668, USA
| | - N Akopov
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia
| | - R Alarcon
- Arizona State University, Tempe, Arizona 85281, USA
| | - O Ates
- Hampton University, Hampton, Virginia 23668, USA
| | - A Avetisyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia
| | - R Beck
- Rheinische Friedrich-Wilhelms-Universität, 53113 Bonn, Germany
| | - S Belostotski
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - J Bessuille
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - F Brinker
- Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany
| | - J R Calarco
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - V Carassiti
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, 44122 Ferrara, Italy
| | - E Cisbani
- Istituto Nazionale di Fisica Nucleare sezione di Roma and Istituto Superiore di Sanità, 00185 Rome, Italy
| | - G Ciullo
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, 44122 Ferrara, Italy
| | - M Contalbrigo
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, 44122 Ferrara, Italy
| | - R De Leo
- Istituto Nazionale di Fisica Nucleare sezione di Bari, 70126 Bari, Italy
| | - J Diefenbach
- Hampton University, Hampton, Virginia 23668, USA
| | - T W Donnelly
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - K Dow
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - G Elbakian
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia
| | - P D Eversheim
- Rheinische Friedrich-Wilhelms-Universität, 53113 Bonn, Germany
| | - S Frullani
- Istituto Nazionale di Fisica Nucleare sezione di Roma and Istituto Superiore di Sanità, 00185 Rome, Italy
| | - Ch Funke
- Rheinische Friedrich-Wilhelms-Universität, 53113 Bonn, Germany
| | - G Gavrilov
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - B Gläser
- Johannes Gutenberg-Universität, 55099 Mainz, Germany
| | - N Görrissen
- Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany
| | - D K Hasell
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Hauschildt
- Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany
| | - Ph Hoffmeister
- Rheinische Friedrich-Wilhelms-Universität, 53113 Bonn, Germany
| | - Y Holler
- Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany
| | - E Ihloff
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Izotov
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - R Kaiser
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - G Karyan
- Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany
| | - J Kelsey
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Kiselev
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - P Klassen
- Rheinische Friedrich-Wilhelms-Universität, 53113 Bonn, Germany
| | - A Krivshich
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - I Lehmann
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - P Lenisa
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, 44122 Ferrara, Italy
| | - D Lenz
- Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany
| | - S Lumsden
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Y Ma
- Johannes Gutenberg-Universität, 55099 Mainz, Germany
| | - F Maas
- Johannes Gutenberg-Universität, 55099 Mainz, Germany
| | - H Marukyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia
| | - O Miklukho
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - R G Milner
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Movsisyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia
| | - M Murray
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Y Naryshkin
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | | | - R Perrino
- Istituto Nazionale di Fisica Nucleare sezione di Bari, 70126 Bari, Italy
| | - R P Redwine
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | | | - G Rosner
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - U Schneekloth
- Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany
| | - B Seitz
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - M Statera
- Università degli Studi di Ferrara and Istituto Nazionale di Fisica Nucleare sezione di Ferrara, 44122 Ferrara, Italy
| | - A Thiel
- Rheinische Friedrich-Wilhelms-Universität, 53113 Bonn, Germany
| | - H Vardanyan
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia
| | - D Veretennikov
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - C Vidal
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Winnebeck
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - V Yeganov
- Alikhanyan National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia
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5
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Zhang YW, Long E, Mihovilovič M, Jin G, Allada K, Anderson B, Annand JRM, Averett T, Ayerbe-Gayoso C, Boeglin W, Bradshaw P, Camsonne A, Canan M, Cates GD, Chen C, Chen JP, Chudakov E, De Leo R, Deng X, Deur A, Dutta C, El Fassi L, Flay D, Frullani S, Garibaldi F, Gao H, Gilad S, Gilman R, Glamazdin O, Golge S, Gomez J, Hansen O, Higinbotham DW, Holmstrom T, Huang J, Ibrahim H, de Jager CW, Jensen E, Jiang X, St John J, Jones M, Kang H, Katich J, Khanal HP, King P, Korsch W, LeRose J, Lindgren R, Lu HJ, Luo W, Markowitz P, Meziane M, Michaels R, Moffit B, Monaghan P, Muangma N, Nanda S, Norum BE, Pan K, Parno D, Piasetzky E, Posik M, Punjabi V, Puckett AJR, Qian X, Qiang Y, Qiu X, Riordan S, Ron G, Saha A, Sawatzky B, Schiavilla R, Schoenrock B, Shabestari M, Shahinyan A, Širca S, Subedi R, Sulkosky V, Tobias WA, Tireman W, Urciuoli GM, Wang D, Wang K, Wang Y, Watson J, Wojtsekhowski B, Ye Z, Zhan X, Zhang Y, Zheng X, Zhao B, Zhu L. Measurement of the Target-Normal Single-Spin Asymmetry in Quasielastic Scattering from the Reaction (3)He(↑)(e,e'). Phys Rev Lett 2015; 115:172502. [PMID: 26551107 DOI: 10.1103/physrevlett.115.172502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Indexed: 06/05/2023]
Abstract
We report the first measurement of the target single-spin asymmetry, A(y), in quasielastic scattering from the inclusive reaction (3)He(↑)(e,e') on a (3)He gas target polarized normal to the lepton scattering plane. Assuming time-reversal invariance, this asymmetry is strictly zero for one-photon exchange. A nonzero A(y) can arise from the interference between the one- and two-photon exchange processes which is sensitive to the details of the substructure of the nucleon. An experiment recently completed at Jefferson Lab yielded asymmetries with high statistical precision at Q(2)=0.13, 0.46, and 0.97 GeV(2). These measurements demonstrate, for the first time, that the (3)He asymmetry is clearly nonzero and negative at the 4σ-9σ level. Using measured proton-to-(3)He cross-section ratios and the effective polarization approximation, neutron asymmetries of -(1-3)% were obtained. The neutron asymmetry at high Q(2) is related to moments of the generalized parton distributions (GPDs). Our measured neutron asymmetry at Q(2)=0.97 GeV(2) agrees well with a prediction based on two-photon exchange using a GPD model and thus provides a new, independent constraint on these distributions.
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Affiliation(s)
- Y-W Zhang
- Rutgers University, New Brunswick, New Jersey 08901, USA
- University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - E Long
- Kent State University, Kent, Ohio 44242, USA
| | | | - G Jin
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - K Allada
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Anderson
- Kent State University, Kent, Ohio 44242, USA
| | - J R M Annand
- Glasgow University, Glasgow G12 8QQ Scotland, United Kingdom
| | - T Averett
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - C Ayerbe-Gayoso
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - W Boeglin
- Florida International University, Miami, Florida 33181, USA
| | - P Bradshaw
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A Camsonne
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Canan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - G D Cates
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - C Chen
- Hampton University, Hampton, Virginia 23669, USA
| | - J P Chen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Chudakov
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R De Leo
- Università degli studi di Bari Aldo Moro, I-70121 Bari, Italy
| | - X Deng
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C Dutta
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - L El Fassi
- Rutgers University, New Brunswick, New Jersey 08901, USA
| | - D Flay
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - S Frullani
- Istituto Nazionale Di Fisica Nucleare, INFN/Sanita, 00161 Roma, Italy
| | - F Garibaldi
- Istituto Nazionale Di Fisica Nucleare, INFN/Sanita, 00161 Roma, Italy
| | - H Gao
- Duke University, Durham, North Carolina 27708, USA
| | - S Gilad
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R Gilman
- Rutgers University, New Brunswick, New Jersey 08901, USA
| | - O Glamazdin
- Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine
| | - S Golge
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - J Gomez
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - O Hansen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D W Higinbotham
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - T Holmstrom
- Longwood University, Farmville, Virginia 23909, USA
| | - J Huang
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - H Ibrahim
- Cairo University, Cairo, Giza 12613, Egypt
| | - C W de Jager
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Jensen
- Christopher Newport University, Newport News, Virginia 23606, USA
| | - X Jiang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J St John
- Longwood University, Farmville, Virginia 23909, USA
| | - M Jones
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Kang
- Seoul National University, Seoul 151-742, Korea
| | - J Katich
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - H P Khanal
- Florida International University, Miami, Florida 33181, USA
| | - P King
- Ohio University, Athens, Ohio 45701, USA
| | - W Korsch
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - J LeRose
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Lindgren
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - H-J Lu
- Huangshan University, Tunxi, Huangshan City, Anhui Province 245041, People's Republic of China
| | - W Luo
- Lanzhou University, Lanzhou, Gansu 730000, People's Republic of China
| | - P Markowitz
- Florida International University, Miami, Florida 33181, USA
| | - M Meziane
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - R Michaels
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Moffit
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Monaghan
- Hampton University, Hampton, Virginia 23669, USA
| | - N Muangma
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - S Nanda
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B E Norum
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - K Pan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - D Parno
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | | | - M Posik
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - V Punjabi
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - A J R Puckett
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - X Qian
- Duke University, Durham, North Carolina 27708, USA
| | - Y Qiang
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - X Qiu
- Lanzhou University, Lanzhou, Gansu 730000, People's Republic of China
| | - S Riordan
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - G Ron
- Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - A Saha
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Sawatzky
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Schiavilla
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - B Schoenrock
- Northern Michigan University, Marquette, Michigan 49855, USA
| | - M Shabestari
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - A Shahinyan
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - S Širca
- Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia
- University of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - R Subedi
- George Washington University, Washington, D.C. 20052, USA
| | - V Sulkosky
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - W A Tobias
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - W Tireman
- Northern Michigan University, Marquette, Michigan 49855, USA
| | - G M Urciuoli
- Istituto Nazionale Di Fisica Nucleare, INFN/Sanita, 00161 Roma, Italy
| | - D Wang
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - K Wang
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - Y Wang
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - J Watson
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Wojtsekhowski
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Z Ye
- Hampton University, Hampton, Virginia 23669, USA
| | - X Zhan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Y Zhang
- Lanzhou University, Lanzhou, Gansu 730000, People's Republic of China
| | - X Zheng
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - B Zhao
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - L Zhu
- Hampton University, Hampton, Virginia 23669, USA
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Mihovilovič M, Jin G, Long E, Zhang YW, Allada K, Anderson B, Annand JRM, Averett T, Boeglin W, Bradshaw P, Camsonne A, Canan M, Cates GD, Chen C, Chen JP, Chudakov E, De Leo R, Deng X, Deltuva A, Deur A, Dutta C, El Fassi L, Flay D, Frullani S, Garibaldi F, Gao H, Gilad S, Gilman R, Glamazdin O, Golak J, Golge S, Gomez J, Hansen O, Higinbotham DW, Holmstrom T, Huang J, Ibrahim H, de Jager CW, Jensen E, Jiang X, Jones M, Kang H, Katich J, Khanal HP, Kievsky A, King P, Korsch W, LeRose J, Lindgren R, Lu HJ, Luo W, Marcucci LE, Markowitz P, Meziane M, Michaels R, Moffit B, Monaghan P, Muangma N, Nanda S, Norum BE, Pan K, Parno D, Piasetzky E, Posik M, Punjabi V, Puckett AJR, Qian X, Qiang Y, Qui X, Riordan S, Saha A, Sauer PU, Sawatzky B, Schiavilla R, Schoenrock B, Shabestari M, Shahinyan A, Širca S, Skibiński R, John JS, Subedi R, Sulkosky V, Tobias WA, Tireman W, Urciuoli GM, Viviani M, Wang D, Wang K, Wang Y, Watson J, Wojtsekhowski B, Witała H, Ye Z, Zhan X, Zhang Y, Zheng X, Zhao B, Zhu L. Measurement of double-polarization asymmetries in the quasielastic (3)He[→](e[→],e(')d) process. Phys Rev Lett 2014; 113:232505. [PMID: 25526124 DOI: 10.1103/physrevlett.113.232505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Indexed: 06/04/2023]
Abstract
We present a precise measurement of double-polarization asymmetries in the ^{3}He[over →](e[over →],e^{'}d) reaction. This particular process is a uniquely sensitive probe of hadron dynamics in ^{3}He and the structure of the underlying electromagnetic currents. The measurements have been performed in and around quasielastic kinematics at Q^{2}=0.25(GeV/c)^{2} for missing momenta up to 270 MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on p_{m} and ω, but are systematically offset. Beyond the region of the quasielastic peak, the discrepancies become even more pronounced. Thus, our measurements have been able to reveal deficiencies in the most sophisticated calculations of the three-body nuclear system, and indicate that further refinement in the treatment of their two-and/or three-body dynamics is required.
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Affiliation(s)
| | - G Jin
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - E Long
- Kent State University, Kent, Ohio 44242, USA
| | - Y-W Zhang
- Rutgers University, New Brunswick, New Jersey 08901, USA
| | - K Allada
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Anderson
- Kent State University, Kent, Ohio 44242, USA
| | - J R M Annand
- Glasgow University, Glasgow G12 8QQ, Scotland, United Kingdom
| | - T Averett
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - W Boeglin
- Florida International University, Miami, Florida 33181, USA
| | - P Bradshaw
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A Camsonne
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Canan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - G D Cates
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - C Chen
- Hampton University, Hampton, Virginia 23669, USA
| | - J P Chen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Chudakov
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R De Leo
- Università degli studi di Bari Aldo Moro, I-70121 Bari, Italy
| | - X Deng
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - A Deltuva
- Center for Nuclear Physics, University of Lisbon, P-1649-003 Lisbon, Portugal and Institute for Theoretical Physics and Astronomy, Vilnius University, LT-01108 Vilnius, Lithuania
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C Dutta
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - L El Fassi
- Rutgers University, New Brunswick, New Jersey 08901, USA
| | - D Flay
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - S Frullani
- Istituto Nazionale Di Fisica Nucleare, INFN/Sanita, Roma, Italy
| | - F Garibaldi
- Istituto Nazionale Di Fisica Nucleare, INFN/Sanita, Roma, Italy
| | - H Gao
- Duke University, Durham, North Carolina 27708, USA
| | - S Gilad
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R Gilman
- Rutgers University, New Brunswick, New Jersey 08901, USA
| | - O Glamazdin
- Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine
| | - J Golak
- M. Smoluchowski Institute of Physics, Jagiellonian University, PL-30059 Kraków, Poland
| | - S Golge
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - J Gomez
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - O Hansen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D W Higinbotham
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - T Holmstrom
- Longwood College, Farmville, Virginia 23909, USA
| | - J Huang
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - H Ibrahim
- Cairo University, Cairo, Giza 12613, Egypt
| | - C W de Jager
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Jensen
- Christopher Newport University, Newport News, Virginia 23606, USA
| | - X Jiang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Jones
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Kang
- Seoul National University, Seoul, Korea
| | - J Katich
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - H P Khanal
- Florida International University, Miami, Florida 33181, USA
| | | | - P King
- Ohio University, Athens, Ohio 45701, USA
| | - W Korsch
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - J LeRose
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Lindgren
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - H-J Lu
- Huangshan University, People's Republic of China
| | - W Luo
- Lanzhou University, Lanzhou, Gansu, 730000, People's Republic of China
| | - L E Marcucci
- Physics Department, Pisa University, I-56127 Pisa, Italy
| | - P Markowitz
- Florida International University, Miami, Florida 33181, USA
| | - M Meziane
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - R Michaels
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Moffit
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Monaghan
- Hampton University, Hampton, Virginia 23669, USA
| | - N Muangma
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - S Nanda
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B E Norum
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - K Pan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - D Parno
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | | | - M Posik
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - V Punjabi
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - A J R Puckett
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - X Qian
- Duke University, Durham, North Carolina 27708, USA
| | - Y Qiang
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - X Qui
- Lanzhou University, Lanzhou, Gansu, 730000, People's Republic of China
| | - S Riordan
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - A Saha
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P U Sauer
- Institute for Theoretical Physics, University of Hannover, D-30167 Hannover, Germany
| | - B Sawatzky
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Schiavilla
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Old Dominion University, Norfolk, Virginia 23529, USA
| | - B Schoenrock
- Northern Michigan University, Marquette, Michigan 49855, USA
| | - M Shabestari
- University of Virginia, Charlottesville, Virginia 22908, USA
| | | | - S Širca
- Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia and University of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - R Skibiński
- M. Smoluchowski Institute of Physics, Jagiellonian University, PL-30059 Kraków, Poland
| | - J St John
- Longwood College, Farmville, Virginia 23909, USA
| | - R Subedi
- George Washington University, Washington, D.C. 20052, USA
| | - V Sulkosky
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - W A Tobias
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - W Tireman
- Northern Michigan University, Marquette, Michigan 49855, USA
| | - G M Urciuoli
- Istituto Nazionale Di Fisica Nucleare, INFN/Sanita, Roma, Italy
| | | | - D Wang
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - K Wang
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - Y Wang
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - J Watson
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Wojtsekhowski
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Witała
- M. Smoluchowski Institute of Physics, Jagiellonian University, PL-30059 Kraków, Poland
| | - Z Ye
- Hampton University, Hampton, Virginia 23669, USA
| | - X Zhan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Y Zhang
- Lanzhou University, Lanzhou, Gansu, 730000, People's Republic of China
| | - X Zheng
- University of Virginia, Charlottesville, Virginia 22908, USA
| | - B Zhao
- The College of William and Mary, Williamsburg, Virginia 23187, USA
| | - L Zhu
- Hampton University, Hampton, Virginia 23669, USA
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Airapetian A, Akopov N, Akopov Z, Aschenauer E, Augustyniak W, Avakian R, Avetissian A, Avetisyan E, Belostotski S, Bianchi N, Blok H, Borissov A, Bowles J, Brodski I, Bryzgalov V, Burns J, Capiluppi M, Capitani G, Cisbani E, Ciullo G, Contalbrigo M, Dalpiaz P, Deconinck W, De Leo R, De Nardo L, De Sanctis E, Diefenthaler M, Di Nezza P, Düren M, Ehrenfried M, Elbakian G, Ellinghaus F, Fabbri R, Fantoni A, Felawka L, Frullani S, Gabbert D, Gapienko G, Gapienko V, Garibaldi F, Gavrilov G, Gharibyan V, Giordano F, Gliske S, Golembiovskaya M, Hadjidakis C, Hartig M, Hasch D, Hillenbrand A, Hoek M, Holler Y, Hristova I, Imazu Y, Ivanilov A, Jackson H, Jo H, Joosten S, Kaiser R, Karyan G, Keri T, Kinney E, Kisselev A, Kobayashi N, Korotkov V, Kozlov V, Kravchenko P, Krivokhijine V, Lagamba L, Lapikás L, Lehmann I, Lenisa P, López Ruiz A, Lorenzon W, Lu XR, Ma BQ, Mahon D, Makins N, Manaenkov S, Mao Y, Marianski B, Martinez de la Ossa A, Marukyan H, Miller C, Miyachi Y, Movsisyan A, Muccifora V, Murray M, Mussgiller A, Nappi E, Naryshkin Y, Nass A, Negodaev M, Nowak WD, Pappalardo L, Perez-Benito R, Raithel M, Reimer P, Reolon A, Riedl C, Rith K, Rosner G, Rostomyan A, Rubin J, Ryckbosch D, Salomatin Y, Sanftl F, Schäfer A, Schnell G, Schüler K, Seitz B, Shibata TA, Shutov V, Stancari M, Statera M, Steffens E, Steijger J, Stewart J, Stinzing F, Taroian S, Terkulov A, Truty R, Trzcinski A, Tytgat M, Vandenbroucke A, Van Haarlem Y, Van Hulse C, Veretennikov D, Vikhrov V, Vilardi I, Wang S, Yaschenko S, Ye Z, Yu W, Zagrebelnyy V, Zeiler D, Zihlmann B, Zupranski P. Transverse polarization ofΛhyperons from quasireal photoproduction on nuclei. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.90.072007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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De Seta F, Parazzini F, De Leo R, Banco R, Maso GP, De Santo D, Sartore A, Stabile G, Inglese S, Tonon M, Restaino S. Lactobacillus plantarum P17630 for preventing Candida vaginitis recurrence: a retrospective comparative study. Eur J Obstet Gynecol Reprod Biol 2014; 182:136-9. [PMID: 25305660 DOI: 10.1016/j.ejogrb.2014.09.018] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 08/17/2014] [Accepted: 09/03/2014] [Indexed: 01/24/2023]
Abstract
BACKGROUND Recurrence is a frequent complaint of patients with vulvovaginal candidiasis (VVC). Although the pathogenesis of VVC remains a controversial issue, disruption of the balance between the vaginal microbiota may facilitate overgrowth by Candida. Some probiotic bacterial strains can suppress Candida albicans; Lactobacillus plantarum P17630 is able to attach to vaginal epithelial cells and significantly reduce the adhesion of C. albicans. OBJECTIVE To evaluate the effect of the application of Lactobacillus plantarum P17630 in restoring the vaginal microbiota and prevention of relapses among women with acute VVC undergoing conventional (azole) local and main therapy. METHODS Retrospective comparative study. We recruited 89 women with a diagnosis of VVC, who were placed into two groups on the basis of reported treatment. The control group was treated with a daily dose of 2% clotrimazole vaginal cream at bedtime for 3 days, followed by vaginal application of a capsule containing lubricant once a day for 6 days and then once a week for another 4 weeks. The probiotic group was treated with the same azole-based protocol but followed by vaginal application of a capsule containing Lactobacillus plantarum P17630 (>10₈ CFU) once a day for 6 days and then once a week for another 4 weeks beginning the day following clotrimazole discontinuation. Clinical and diagnostic patterns were monitored for three months of follow-up. RESULTS At the end of study the probiotic-treated women showed a statistically significant increase in Lactobacillus values "+++" (80% versus 40%, p<0.001) and a better subjective resolution of symptoms such as vaginal discomfort described as burning or itching (90% versus 67.5%, p<0.03). Among controls there was a non-significant increase at 3 months of recurrence of infection, but a significant increase of women with value of pH=5 or >5. CONCLUSION Although the results of different studies are controversial, most have suggested use of probiotics in the prevention or treatment of VVC, and no adverse effects have been reported. Our data with L. plantarum P17630 (Gyno-Canesflor - Bayer) confirm the role of this specific strain as a potential empirical preventive agent for reducing vaginal discomfort after conventional treatment of acute VVC and shifting the vaginal milieu toward a predominance of lactobacilli with an improvement of the vaginal pH value.
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Affiliation(s)
- F De Seta
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy.
| | - F Parazzini
- Dipartimento di Scienze Cliniche e di Comunità, University of Milan, Milano, Italy
| | - R De Leo
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - R Banco
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - G P Maso
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - D De Santo
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - A Sartore
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - G Stabile
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - S Inglese
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - M Tonon
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
| | - S Restaino
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, 34137 Trieste, Italy
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9
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Katich J, Qian X, Zhao YX, Allada K, Aniol K, Annand JRM, Averett T, Benmokhtar F, Bertozzi W, Bradshaw PC, Bosted P, Camsonne A, Canan M, Cates GD, Chen C, Chen JP, Chen W, Chirapatpimol K, Chudakov E, Cisbani E, Cornejo JC, Cusanno F, Dalton MM, Deconinck W, de Jager CW, De Leo R, Deng X, Deur A, Ding H, Dolph PAM, Dutta C, Dutta D, El Fassi L, Frullani S, Gao H, Garibaldi F, Gaskell D, Gilad S, Gilman R, Glamazdin O, Golge S, Guo L, Hamilton D, Hansen O, Higinbotham DW, Holmstrom T, Huang J, Huang M, Ibrahim HF, Iodice M, Jiang X, Jin G, Jones MK, Kelleher A, Kim W, Kolarkar A, Korsch W, LeRose JJ, Li X, Li Y, Lindgren R, Liyanage N, Long E, Lu HJ, Margaziotis DJ, Markowitz P, Marrone S, McNulty D, Meziani ZE, Michaels R, Moffit B, Muñoz Camacho C, Nanda S, Narayan A, Nelyubin V, Norum B, Oh Y, Osipenko M, Parno D, Peng JC, Phillips SK, Posik M, Puckett AJR, Qiang Y, Rakhman A, Ransome RD, Riordan S, Saha A, Sawatzky B, Schulte E, Shahinyan A, Shabestari MH, Širca S, Stepanyan S, Subedi R, Sulkosky V, Tang LG, Tobias A, Urciuoli GM, Vilardi I, Wang K, Wang Y, Wojtsekhowski B, Yan X, Yao H, Ye Y, Ye Z, Yuan L, Zhan X, Zhang Y, Zhang YW, Zhao B, Zheng X, Zhu L, Zhu X, Zong X. Measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the reaction (3)He(↑)(e,e')X. Phys Rev Lett 2014; 113:022502. [PMID: 25062169 DOI: 10.1103/physrevlett.113.022502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Indexed: 06/03/2023]
Abstract
We report the first measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the inclusive reaction 3)He(↑)(e,e')X on a polarized (3)He gas target. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation but can be nonzero if two-photon-exchange contributions are included. The experiment, conducted at Jefferson Lab using a 5.89 GeV electron beam, covers a range of 1.7<W<2.9 GeV, 1.0<Q(2)<4.0 GeV(2) and 0.16<x<0.65. Neutron asymmetries were extracted using the effective nucleon polarization and measured proton-to-(3)He cross-section ratios. The measured neutron asymmetries are negative with an average value of (-1.09±0.38)×10(-2) for invariant mass W>2 GeV, which is nonzero at the 2.89σ level. Our measured asymmetry agrees both in sign and magnitude with a two-photon-exchange model prediction that uses input from the Sivers transverse momentum distribution obtained from semi-inclusive deep-inelastic scattering.
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Affiliation(s)
- J Katich
- College of William and Mary, Williamsburg, Virginia 23187, USA and University of Colorado, Boulder, Colorado 80309, USA
| | - X Qian
- Duke University, Durham, North Carolina 27708, USA and Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA and Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y X Zhao
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - K Allada
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - K Aniol
- California State University, Los Angeles, Los Angeles, California 90032, USA
| | - J R M Annand
- University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - T Averett
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - F Benmokhtar
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - W Bertozzi
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - P C Bradshaw
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - P Bosted
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A Camsonne
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Canan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - G D Cates
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - C Chen
- Hampton University, Hampton, Virginia 23187, USA
| | - J-P Chen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W Chen
- Duke University, Durham, North Carolina 27708, USA
| | - K Chirapatpimol
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - E Chudakov
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Cisbani
- INFN, Sezione di Roma, I-00161 Rome, Italy and Istituto Superiore di Sanità, I-00161 Rome, Italy
| | - J C Cornejo
- California State University, Los Angeles, Los Angeles, California 90032, USA
| | - F Cusanno
- INFN, Sezione di Roma, I-00161 Rome, Italy and Istituto Superiore di Sanità, I-00161 Rome, Italy
| | - M M Dalton
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - W Deconinck
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - C W de Jager
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and University of Virginia, Charlottesville, Virginia 22904, USA
| | - R De Leo
- INFN, Sezione di Bari and University of Bari, I-70126 Bari, Italy
| | - X Deng
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Ding
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - P A M Dolph
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - C Dutta
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - D Dutta
- Mississippi State University, Mississippi State, Minnesota 39762, USA
| | - L El Fassi
- Old Dominion University, Norfolk, Virginia 23529, USA and Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA
| | - S Frullani
- INFN, Sezione di Roma, I-00161 Rome, Italy and Istituto Superiore di Sanità, I-00161 Rome, Italy
| | - H Gao
- Duke University, Durham, North Carolina 27708, USA
| | - F Garibaldi
- INFN, Sezione di Roma, I-00161 Rome, Italy and Istituto Superiore di Sanità, I-00161 Rome, Italy
| | - D Gaskell
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S Gilad
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R Gilman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA
| | - O Glamazdin
- Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine
| | - S Golge
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - L Guo
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Hamilton
- University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - O Hansen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D W Higinbotham
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - T Holmstrom
- Longwood University, Farmville, Virginia 23909, USA
| | - J Huang
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - M Huang
- Duke University, Durham, North Carolina 27708, USA
| | | | - M Iodice
- INFN, Sezione di Roma3, I-00146 Rome, Italy
| | - X Jiang
- Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA and Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - G Jin
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - M K Jones
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A Kelleher
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - W Kim
- Kyungpook National University, Taegu 702-701, Republic of Korea
| | - A Kolarkar
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - W Korsch
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - J J LeRose
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - X Li
- China Institute of Atomic Energy, Beijing, People's Republic of China
| | - Y Li
- China Institute of Atomic Energy, Beijing, People's Republic of China
| | - R Lindgren
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - N Liyanage
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - E Long
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - H-J Lu
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - D J Margaziotis
- California State University, Los Angeles, Los Angeles, California 90032, USA
| | - P Markowitz
- Florida International University, Miami, Florida 33199, USA
| | - S Marrone
- INFN, Sezione di Bari and University of Bari, I-70126 Bari, Italy
| | - D McNulty
- University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Z-E Meziani
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - R Michaels
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Moffit
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | | | - S Nanda
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A Narayan
- Mississippi State University, Mississippi State, Minnesota 39762, USA
| | - V Nelyubin
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - B Norum
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - Y Oh
- Seoul National University, Seoul, 151-747, Republic of Korea
| | - M Osipenko
- INFN, Sezione di Genova, I-16146 Genova, Italy
| | - D Parno
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - J C Peng
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - S K Phillips
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - M Posik
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - A J R Puckett
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Y Qiang
- Duke University, Durham, North Carolina 27708, USA and Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A Rakhman
- Syracuse University, Syracuse, New York 13244, USA
| | - R D Ransome
- Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA
| | - S Riordan
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - A Saha
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Sawatzky
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Temple University, Philadelphia, Pennsylvania 19122, USA
| | - E Schulte
- Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA
| | - A Shahinyan
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - M H Shabestari
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - S Širca
- University of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - S Stepanyan
- Kyungpook National University, Daegu 702-701, Republic of Korea
| | - R Subedi
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - V Sulkosky
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L-G Tang
- Hampton University, Hampton, Virginia 23187, USA
| | - A Tobias
- University of Virginia, Charlottesville, Virginia 22904, USA
| | | | - I Vilardi
- INFN, Sezione di Bari and University of Bari, I-70126 Bari, Italy
| | - K Wang
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - Y Wang
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - B Wojtsekhowski
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - X Yan
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - H Yao
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - Y Ye
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Z Ye
- Hampton University, Hampton, Virginia 23187, USA
| | - L Yuan
- Hampton University, Hampton, Virginia 23187, USA
| | - X Zhan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Y Zhang
- Lanzhou University, Lanzhou 730000, Gansu, People's Republic of China
| | - Y-W Zhang
- Lanzhou University, Lanzhou 730000, Gansu, People's Republic of China
| | - B Zhao
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - X Zheng
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - L Zhu
- Hampton University, Hampton, Virginia 23187, USA and University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - X Zhu
- Duke University, Durham, North Carolina 27708, USA
| | - X Zong
- Duke University, Durham, North Carolina 27708, USA
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10
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Korover I, Muangma N, Hen O, Shneor R, Sulkosky V, Kelleher A, Gilad S, Higinbotham DW, Piasetzky E, Watson JW, Wood SA, Aguilera P, Ahmed Z, Albataineh H, Allada K, Anderson B, Anez D, Aniol K, Annand J, Armstrong W, Arrington J, Averett T, Badman T, Baghdasaryan H, Bai X, Beck A, Beck S, Bellini V, Benmokhtar F, Bertozzi W, Bittner J, Boeglin W, Camsonne A, Chen C, Chen JP, Chirapatpimol K, Cisbani E, Dalton MM, Daniel A, Day D, de Jager CW, De Leo R, Deconinck W, Defurne M, Flay D, Fomin N, Friend M, Frullani S, Fuchey E, Garibaldi F, Gaskell D, Gilman R, Glamazdin O, Gu C, Gueye P, Hamilton D, Hanretty C, Hansen JO, Hashemi Shabestari M, Holmstrom T, Huang M, Iqbal S, Jin G, Kalantarians N, Kang H, Khandaker M, LeRose J, Leckey J, Lindgren R, Long E, Mammei J, Margaziotis DJ, Markowitz P, Marti Jimenez-Arguello A, Meekins D, Meziani Z, Michaels R, Mihovilovic M, Monaghan P, Munoz Camacho C, Norum B, Pan K, Phillips S, Pomerantz I, Posik M, Punjabi V, Qian X, Qiang Y, Qiu X, Rakhman A, Reimer PE, Riordan S, Ron G, Rondon-Aramayo O, Saha A, Schulte E, Selvy L, Shahinyan A, Sirca S, Sjoegren J, Slifer K, Solvignon P, Sparveris N, Subedi R, Tireman W, Wang D, Weinstein LB, Wojtsekhowski B, Yan W, Yaron I, Ye Z, Zhan X, Zhang J, Zhang Y, Zhao B, Zhao Z, Zheng X, Zhu P, Zielinski R. Probing the repulsive core of the nucleon-nucleon interaction via the (4)He(e,e'pN) triple-coincidence reaction. Phys Rev Lett 2014; 113:022501. [PMID: 25062168 DOI: 10.1103/physrevlett.113.022501] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Indexed: 06/03/2023]
Abstract
We studied simultaneously the (4)He(e,e'p), (4)He(e,e'pp), and (4)He(e,e'pn) reactions at Q(2)=2(GeV/c)(2) and x(B)>1, for an (e,e'p) missing-momentum range of 400 to 830 MeV/c. The knocked-out proton was detected in coincidence with a proton or neutron recoiling almost back to back to the missing momentum, leaving the residual A=2 system at low excitation energy. These data were used to identify two-nucleon short-range correlated pairs and to deduce their isospin structure as a function of missing momentum, in a region where the nucleon-nucleon (NN) force is expected to change from predominantly tensor to repulsive. The abundance of neutron-proton pairs is reduced as the nucleon momentum increases beyond ∼500 MeV/c. The extracted fraction of proton-proton pairs is small and almost independent of the missing momentum. Our data are compared with calculations of two-nucleon momentum distributions in (4)He and discussed in the context of probing the elusive repulsive component of the NN force.
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Affiliation(s)
- I Korover
- Tel Aviv University, Tel Aviv 69978, Israel
| | - N Muangma
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - O Hen
- Tel Aviv University, Tel Aviv 69978, Israel
| | - R Shneor
- Tel Aviv University, Tel Aviv 69978, Israel
| | - V Sulkosky
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Longwood University, Farmville, Virginia 23909, USA
| | - A Kelleher
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - S Gilad
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - D W Higinbotham
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | | | - J W Watson
- Kent State University, Kent, Ohio 44242, USA
| | - S A Wood
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Aguilera
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3-Université Paris-Sud, F-91406 Orsay Cedex, France
| | - Z Ahmed
- Syracuse University, Syracuse, New York 13244, USA
| | - H Albataineh
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - K Allada
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - B Anderson
- Kent State University, Kent, Ohio 44242, USA
| | - D Anez
- Saint Mary's University, Halifax, Nova Scotia, Canada
| | - K Aniol
- California State University, Los Angeles, Los Angeles, California 90032, USA
| | - J Annand
- University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - W Armstrong
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - J Arrington
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - T Averett
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - T Badman
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - H Baghdasaryan
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - X Bai
- China Institute of Atomic Energy, Beijing, China
| | - A Beck
- Nuclear Research Center Negev, Beer-Sheva, Israel
| | - S Beck
- Nuclear Research Center Negev, Beer-Sheva, Israel
| | - V Bellini
- Universita di Catania, Catania, Italy
| | - F Benmokhtar
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - W Bertozzi
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Bittner
- Longwood University, Farmville, Virginia 23909, USA
| | - W Boeglin
- Florida International University, Miami, Florida 33199, USA
| | - A Camsonne
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C Chen
- Hampton University, Hampton, Virginia 23668, USA
| | - J-P Chen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - K Chirapatpimol
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - E Cisbani
- INFN, Sezione Sanità and Istituto Superiore di Sanità, 00161 Rome, Italy
| | - M M Dalton
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - A Daniel
- Ohio University, Athens, Ohio 45701, USA
| | - D Day
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - C W de Jager
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and University of Virginia, Charlottesville, Virginia 22904, USA
| | - R De Leo
- INFN, Sezione di Bari and University of Bari, I-70126 Bari, Italy
| | - W Deconinck
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - M Defurne
- CEA Saclay, F-91191 Gif-sur-Yvette, France
| | - D Flay
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - N Fomin
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - M Friend
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - S Frullani
- INFN, Sezione Sanità and Istituto Superiore di Sanità, 00161 Rome, Italy
| | - E Fuchey
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - F Garibaldi
- INFN, Sezione Sanità and Istituto Superiore di Sanità, 00161 Rome, Italy
| | - D Gaskell
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Gilman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA and Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA
| | - O Glamazdin
- Kharkov Institute of Physics and Technology, Kharkov 61108, Ukraine
| | - C Gu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - P Gueye
- Hampton University, Hampton, Virginia 23668, USA
| | - D Hamilton
- University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - C Hanretty
- Florida State University, Tallahassee, Florida 32306, USA
| | - J-O Hansen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | | | - T Holmstrom
- Longwood University, Farmville, Virginia 23909, USA
| | - M Huang
- Duke University, Durham, North Carolina 27708, USA
| | - S Iqbal
- California State University, Los Angeles, Los Angeles, California 90032, USA
| | - G Jin
- University of Virginia, Charlottesville, Virginia 22904, USA
| | | | - H Kang
- Seoul National University, Seoul, Korea
| | - M Khandaker
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J LeRose
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J Leckey
- Indiana University, Bloomington, Indiana 47405, USA
| | - R Lindgren
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - E Long
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - J Mammei
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - D J Margaziotis
- California State University, Los Angeles, Los Angeles, California 90032, USA
| | - P Markowitz
- Florida International University, Miami, Florida 33199, USA
| | | | - D Meekins
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Z Meziani
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - R Michaels
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | | | - P Monaghan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Hampton University, Hampton, Virginia 23668, USA
| | | | - B Norum
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - K Pan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - S Phillips
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - I Pomerantz
- Tel Aviv University, Tel Aviv 69978, Israel and The University of Texas at Austin, Austin, Texas 78712, USA
| | - M Posik
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - V Punjabi
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - X Qian
- Duke University, Durham, North Carolina 27708, USA
| | - Y Qiang
- Duke University, Durham, North Carolina 27708, USA
| | - X Qiu
- Lanzhou University, Lanzhou, China
| | - A Rakhman
- Syracuse University, Syracuse, New York 13244, USA
| | - P E Reimer
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - S Riordan
- University of Virginia, Charlottesville, Virginia 22904, USA and University of Massachusetts, Amherst, Massachusetts 01006, USA
| | - G Ron
- Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem, Israel
| | - O Rondon-Aramayo
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A Saha
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Schulte
- Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA
| | - L Selvy
- Kent State University, Kent, Ohio 44242, USA
| | - A Shahinyan
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - S Sirca
- University of Ljubljana, Ljubljana, Slovenia
| | - J Sjoegren
- University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
| | - K Slifer
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - P Solvignon
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - N Sparveris
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - R Subedi
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - W Tireman
- Northern Michigan University, Marquette, Michigan 49855, USA
| | - D Wang
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - L B Weinstein
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - B Wojtsekhowski
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W Yan
- University of Science and Technology, Hefei, China
| | - I Yaron
- Tel Aviv University, Tel Aviv 69978, Israel
| | - Z Ye
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - X Zhan
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Zhang
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Y Zhang
- Rutgers, The State University of New Jersey, Piscataway, New Jersey 08855, USA
| | - B Zhao
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - Z Zhao
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - X Zheng
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - P Zhu
- University of Science and Technology, Hefei, China
| | - R Zielinski
- University of New Hampshire, Durham, New Hampshire 03824, USA
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11
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Galetta G, De Leo R, Garibaldi F, Grodzicka M, Lagamba L, Loddo F, Masiello G, Nappi E, Perrino R, Ranieri A, Szczęśniak T. Coincidence resolution time of two small scintillators coupled to high quantum-efficiency photomultipliers in a PET-like system. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146610010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Galetta G, Ciciriello F, Corsi F, De Leo R, Garibaldi F, Lagamba L, Licciulli F, Loddo F, Marzocca C, Nappi E, Perrino R, Ranieri A. Time and charge characterization of Hamamatsu Photonics silicon photomultipliers. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146611028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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13
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Wang D, Pan K, Subedi R, Deng X, Ahmed Z, Allada K, Aniol KA, Armstrong DS, Arrington J, Bellini V, Beminiwattha R, Benesch J, Benmokhtar F, Camsonne A, Canan M, Cates GD, Chen JP, Chudakov E, Cisbani E, Dalton MM, de Jager CW, De Leo R, Deconinck W, Deur A, Dutta C, El Fassi L, Flay D, Franklin GB, Friend M, Frullani S, Garibaldi F, Giusa A, Glamazdin A, Golge S, Grimm K, Hafidi K, Hansen O, Higinbotham DW, Holmes R, Holmstrom T, Holt RJ, Huang J, Hyde CE, Jen CM, Jones D, Kang H, King P, Kowalski S, Kumar KS, Lee JH, LeRose JJ, Liyanage N, Long E, McNulty D, Margaziotis DJ, Meddi F, Meekins DG, Mercado L, Meziani ZE, Michaels R, Mihovilovic M, Muangma N, Myers KE, Nanda S, Narayan A, Nelyubin V, Oh Y, Parno D, Paschke KD, Phillips SK, Qian X, Qiang Y, Quinn B, Rakhman A, Reimer PE, Rider K, Riordan S, Roche J, Rubin J, Russo G, Saenboonruang K, Saha A, Sawatzky B, Shahinyan A, Silwal R, Sirca S, Souder PA, Suleiman R, Sulkosky V, Sutera CM, Tobias WA, Urciuoli GM, Waidyawansa B, Wojtsekhowski B, Ye L, Zhao B, Zheng X. Measurements of parity-violating asymmetries in electron-deuteron scattering in the nucleon resonance region. Phys Rev Lett 2013; 111:082501. [PMID: 24016222 DOI: 10.1103/physrevlett.111.082501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Indexed: 06/02/2023]
Abstract
We report on parity-violating asymmetries in the nucleon resonance region measured using inclusive inelastic scattering of 5-6 GeV longitudinally polarized electrons off an unpolarized deuterium target. These results are the first parity-violating asymmetry data in the resonance region beyond the Δ(1232). They provide a verification of quark-hadron duality-the equivalence of the quark- and hadron-based pictures of the nucleon-at the (10-15)% level in this electroweak observable, which is dominated by contributions from the nucleon electroweak γZ interference structure functions. In addition, the results provide constraints on nucleon resonance models relevant for calculating background corrections to elastic parity-violating electron scattering measurements.
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Affiliation(s)
- D Wang
- University of Virginia, Charlottesville, Virginia 22904, USA
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14
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Solevi P, Oliver JF, Gillam JE, Bolle E, Casella C, Chesi E, De Leo R, Dissertori G, Fanti V, Heller M, Lai M, Lustermann W, Nappi E, Pauss F, Rudge A, Ruotsalainen U, Schinzel D, Schneider T, Séguinot J, Stapnes S, Weilhammer P, Tuna U, Joram C, Rafecas M. A Monte-Carlo based model of the AX-PET demonstrator and its experimental validation. Phys Med Biol 2013; 58:5495-510. [DOI: 10.1088/0031-9155/58/16/5495] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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De Seta F, Banco R, Turrisi A, Airoud M, De Leo R, Stabile G, Ceccarello M, Restaino S, De Santo D. Pelvic inflammatory disease (PID) from Chlamydia trachomatis versus PID from Neisseria gonorrhea: from clinical suspicion to therapy. GIORN ITAL DERMAT V 2012; 147:423-430. [PMID: 23007248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Pelvic inflammatory disease (PID) is the most significant complication of sexually transmitted infections in childbearing-age women and it represents an important public health problem because of its long-term sequelae (chronic pelvic pain, tubal infertility, ectopic pregnancy). Prior to the mid 1970s PID was considered a monoetiologic infection, due primarily to Neisseria gonorrhea. Now it is well documented as a polymicrobial process, with a great number of microrganisms involved. In addition to Neisseria gonorrhea and Chlamydia trachomatis, other vaginal microrganisms (anaerobes, Gardnerella vaginalis, Haemophilus influenzae, enteric Gram negative rods, Streptococco agalactie, Mycoplasma genitalium) also have been associated with PID. There is a wide variation in PID clinical features; the type and severity of symptoms vary by microbiologic etiology. Women who have chlamydial PID seem more likely than women who have gonococcal PID to be asymptomatic. Since clinical diagnosis is imprecise, the suspicion of PID should be confirmed by genital assessment for signs of inflammation or infection, blood test and imaging evaluation. Laparoscopic approach is considered the gold standard. According to the polymicrobial etiology of PID, antibiotic treatment must provide broad spectrum coverage of likely pathogens. Early administration of antibiotics is necessary to reduce the risk of long-term sequelae.
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Affiliation(s)
- F De Seta
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", University of Trieste, Trieste, Italy.
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Abrahamyan S, Ahmed Z, Albataineh H, Aniol K, Armstrong DS, Armstrong W, Averett T, Babineau B, Barbieri A, Bellini V, Beminiwattha R, Benesch J, Benmokhtar F, Bielarski T, Boeglin W, Camsonne A, Canan M, Carter P, Cates GD, Chen C, Chen JP, Hen O, Cusanno F, Dalton MM, De Leo R, de Jager K, Deconinck W, Decowski P, Deng X, Deur A, Dutta D, Etile A, Flay D, Franklin GB, Friend M, Frullani S, Fuchey E, Garibaldi F, Gasser E, Gilman R, Giusa A, Glamazdin A, Gomez J, Grames J, Gu C, Hansen O, Hansknecht J, Higinbotham DW, Holmes RS, Holmstrom T, Horowitz CJ, Hoskins J, Huang J, Hyde CE, Itard F, Jen CM, Jensen E, Jin G, Johnston S, Kelleher A, Kliakhandler K, King PM, Kowalski S, Kumar KS, Leacock J, Leckey J, Lee JH, LeRose JJ, Lindgren R, Liyanage N, Lubinsky N, Mammei J, Mammoliti F, Margaziotis DJ, Markowitz P, McCreary A, McNulty D, Mercado L, Meziani ZE, Michaels RW, Mihovilovic M, Muangma N, Muñoz-Camacho C, Nanda S, Nelyubin V, Nuruzzaman N, Oh Y, Palmer A, Parno D, Paschke KD, Phillips SK, Poelker B, Pomatsalyuk R, Posik M, Puckett AJR, Quinn B, Rakhman A, Reimer PE, Riordan S, Rogan P, Ron G, Russo G, Saenboonruang K, Saha A, Sawatzky B, Shahinyan A, Silwal R, Sirca S, Slifer K, Solvignon P, Souder PA, Sperduto ML, Subedi R, Suleiman R, Sulkosky V, Sutera CM, Tobias WA, Troth W, Urciuoli GM, Waidyawansa B, Wang D, Wexler J, Wilson R, Wojtsekhowski B, Yan X, Yao H, Ye Y, Ye Z, Yim V, Zana L, Zhan X, Zhang J, Zhang Y, Zheng X, Zhu P. Measurement of the neutron radius of 208Pb through parity violation in electron scattering. Phys Rev Lett 2012; 108:112502. [PMID: 22540469 DOI: 10.1103/physrevlett.108.112502] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Indexed: 05/31/2023]
Abstract
We report the first measurement of the parity-violating asymmetry A(PV) in the elastic scattering of polarized electrons from 208Pb. A(PV) is sensitive to the radius of the neutron distribution (R(n)). The result A(PV)=0.656±0.060(stat)±0.014(syst) ppm corresponds to a difference between the radii of the neutron and proton distributions R(n)-R(p)=0.33(-0.18)(+0.16) fm and provides the first electroweak observation of the neutron skin which is expected in a heavy, neutron-rich nucleus.
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17
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Ahmed Z, Allada K, Aniol KA, Armstrong DS, Arrington J, Baturin P, Bellini V, Benesch J, Beminiwattha R, Benmokhtar F, Canan M, Camsonne A, Cates GD, Chen JP, Chudakov E, Cisbani E, Dalton MM, de Jager CW, De Leo R, Deconinck W, Decowski P, Deng X, Deur A, Dutta C, Franklin GB, Friend M, Frullani S, Garibaldi F, Giusa A, Glamazdin A, Golge S, Grimm K, Hansen O, Higinbotham DW, Holmes R, Holmstrom T, Huang J, Huang M, Hyde CE, Jen CM, Jin G, Jones D, Kang H, King P, Kowalski S, Kumar KS, Lee JH, LeRose JJ, Liyanage N, Long E, McNulty D, Margaziotis D, Meddi F, Meekins DG, Mercado L, Meziani ZE, Michaels R, Muñoz-Camacho C, Mihovilovic M, Muangma N, Myers KE, Nanda S, Narayan A, Nelyubin V, Oh Y, Pan K, Parno D, Paschke KD, Phillips SK, Qian X, Qiang Y, Quinn B, Rakhman A, Reimer PE, Rider K, Riordan S, Roche J, Rubin J, Russo G, Saenboonruang K, Saha A, Sawatzky B, Silwal R, Sirca S, Souder PA, Sperduto M, Subedi R, Suleiman R, Sulkosky V, Sutera CM, Tobias WA, Urciuoli GM, Waidyawansa B, Wang D, Wexler J, Wilson R, Wojtsekhowski B, Zhan X, Yan X, Yao H, Ye L, Zhao B, Zheng X. New precision limit on the strange vector form factors of the proton. Phys Rev Lett 2012; 108:102001. [PMID: 22468841 DOI: 10.1103/physrevlett.108.102001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Indexed: 05/31/2023]
Abstract
The parity-violating cross-section asymmetry in the elastic scattering of polarized electrons from unpolarized protons has been measured at a four-momentum transfer squared Q2 = 0.624 GeV2 and beam energy E(b) = 3.48 GeV to be A(PV) = -23.80 ± 0.78(stat) ± 0.36(syst) parts per million. This result is consistent with zero contribution of strange quarks to the combination of electric and magnetic form factors G(E)(s) + 0.517G(M)(s) = 0.003 ± 0.010(stat) ± 0.004(syst) ± 0.009(ff), where the third error is due to the limits of precision on the electromagnetic form factors and radiative corrections. With this measurement, the world data on strange contributions to nucleon form factors are seen to be consistent with zero and not more than a few percent of the proton form factors.
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Affiliation(s)
- Z Ahmed
- Syracuse University, Syracuse, New York 13244, USA
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Huang J, Allada K, Dutta C, Katich J, Qian X, Wang Y, Zhang Y, Aniol K, Annand JRM, Averett T, Benmokhtar F, Bertozzi W, Bradshaw PC, Bosted P, Camsonne A, Canan M, Cates GD, Chen C, Chen JP, Chen W, Chirapatpimol K, Chudakov E, Cisbani E, Cornejo JC, Cusanno F, Dalton MM, Deconinck W, de Jager CW, De Leo R, Deng X, Deur A, Ding H, Dolph PAM, Dutta D, El Fassi L, Frullani S, Gao H, Garibaldi F, Gaskell D, Gilad S, Gilman R, Glamazdin O, Golge S, Guo L, Hamilton D, Hansen O, Higinbotham DW, Holmstrom T, Huang M, Ibrahim HF, Iodice M, Jiang X, Jin G, Jones MK, Kelleher A, Kim W, Kolarkar A, Korsch W, Lerose JJ, Li X, Li Y, Lindgren R, Liyanage N, Long E, Lu HJ, Margaziotis DJ, Markowitz P, Marrone S, McNulty D, Meziani ZE, Michaels R, Moffit B, Muñoz Camacho C, Nanda S, Narayan A, Nelyubin V, Norum B, Oh Y, Osipenko M, Parno D, Peng JC, Phillips SK, Posik M, Puckett AJR, Qiang Y, Rakhman A, Ransome RD, Riordan S, Saha A, Sawatzky B, Schulte E, Shahinyan A, Shabestari MH, Sirca S, Stepanyan S, Subedi R, Sulkosky V, Tang LG, Tobias A, Urciuoli GM, Vilardi I, Wang K, Wojtsekhowski B, Yan X, Yao H, Ye Y, Ye Z, Yuan L, Zhan X, Zhang YW, Zhao B, Zheng X, Zhu L, Zhu X, Zong X. Beam-target double-spin asymmetry A{LT} in charged pion production from deep inelastic scattering on a transversely polarized {3}He target at 1.4<Q{2}<2.7 GeV{2}. Phys Rev Lett 2012; 108:052001. [PMID: 22400926 DOI: 10.1103/physrevlett.108.052001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Indexed: 05/31/2023]
Abstract
We report the first measurement of the double-spin asymmetry A{LT} for charged pion electroproduction in semi-inclusive deep-inelastic electron scattering on a transversely polarized {3}He target. The kinematics focused on the valence quark region, 0.16<x<0.35 with 1.4<Q{2}<2.7 GeV{2}. The corresponding neutron A{LT} asymmetries were extracted from the measured {3}He asymmetries and proton over {3}He cross section ratios using the effective polarization approximation. These new data probe the transverse momentum dependent parton distribution function g{1T}{q} and therefore provide access to quark spin-orbit correlations. Our results indicate a positive azimuthal asymmetry for π{-} production on {3}He and the neutron, while our π{+} asymmetries are consistent with zero.
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Affiliation(s)
- J Huang
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
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19
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Qian X, Allada K, Dutta C, Huang J, Katich J, Wang Y, Zhang Y, Aniol K, Annand JRM, Averett T, Benmokhtar F, Bertozzi W, Bradshaw PC, Bosted P, Camsonne A, Canan M, Cates GD, Chen C, Chen JP, Chen W, Chirapatpimol K, Chudakov E, Cisbani E, Cornejo JC, Cusanno F, Dalton MM, Deconinck W, de Jager CW, De Leo R, Deng X, Deur A, Ding H, Dolph PAM, Dutta D, El Fassi L, Frullani S, Gao H, Garibaldi F, Gaskell D, Gilad S, Gilman R, Glamazdin O, Golge S, Guo L, Hamilton D, Hansen O, Higinbotham DW, Holmstrom T, Huang M, Ibrahim HF, Iodice M, Jiang X, Jin G, Jones MK, Kelleher A, Kim W, Kolarkar A, Korsch W, LeRose JJ, Li X, Li Y, Lindgren R, Liyanage N, Long E, Lu HJ, Margaziotis DJ, Markowitz P, Marrone S, McNulty D, Meziani ZE, Michaels R, Moffit B, Camacho CM, Nanda S, Narayan A, Nelyubin V, Norum B, Oh Y, Osipenko M, Parno D, Peng JC, Phillips SK, Posik M, Puckett AJR, Qiang Y, Rakhman A, Ransome RD, Riordan S, Saha A, Sawatzky B, Schulte E, Shahinyan A, Shabestari MH, Sirca S, Stepanyan S, Subedi R, Sulkosky V, Tang LG, Tobias A, Urciuoli GM, Vilardi I, Wang K, Wojtsekhowski B, Yan X, Yao H, Ye Y, Ye Z, Yuan L, Zhan X, Zhang YW, Zhao B, Zheng X, Zhu L, Zhu X, Zong X. Single spin asymmetries in charged pion production from semi-inclusive deep inelastic scattering on a transversely polarized 3He Target at Q2 = 1.4-2.7 GeV2. Phys Rev Lett 2011; 107:072003. [PMID: 21902386 DOI: 10.1103/physrevlett.107.072003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Indexed: 05/31/2023]
Abstract
We report the first measurement of target single spin asymmetries in the semi-inclusive (3)He(e,e'π(±))X reaction on a transversely polarized target. The experiment, conducted at Jefferson Lab using a 5.9 GeV electron beam, covers a range of 0.16 < x < 0.35 with 1.4 < Q(2) < 2.7 GeV(2). The Collins and Sivers moments were extracted from the azimuthal angular dependence of the measured asymmetries. The π(±) Collins moments for (3)He are consistent with zero, except for the π(+) moment at x = 0.35, which deviates from zero by 2.3σ. While the π(-) Sivers moments are consistent with zero, the π(+) Sivers moments favor negative values. The neutron results were extracted using the nucleon effective polarization and measured cross section ratios of proton to (3)He, and are largely consistent with the predictions of phenomenological fits and quark model calculations.
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Affiliation(s)
- X Qian
- Duke University, Durham, North Carolina 27708, USA.
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20
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Bolle E, Braem A, Casella C, Chesi E, Clinthorne N, Cochran E, De Leo R, Dissertori G, Djambazov L, Honscheid K, Huh S, Johnson I, Joram C, Kagan H, Lacasta C, Lustermann W, Meddi F, Nappi E, Nessi-Tedaldi F, Oliver J, Pauss F, Rafecas M, Renker D, Rudge A, Schinzel D, Schneider T, Séguinot J, Smith S, Solevi P, Stapnes S, Vilardi I, Weilhammer P. Development of a High Precision Axial 3-D PET for Brain Imaging. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.nuclphysbps.2009.10.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Cusanno F, Urciuoli GM, Acha A, Ambrozewicz P, Aniol KA, Baturin P, Bertin PY, Benaoum H, Blomqvist KI, Boeglin WU, Breuer H, Brindza P, Bydzovský P, Camsonne A, Chang CC, Chen JP, Choi S, Chudakov EA, Cisbani E, Colilli S, Coman L, Craver BJ, De Cataldo G, de Jager CW, De Leo R, Deur AP, Ferdi C, Feuerbach RJ, Folts E, Fratoni R, Frullani S, Garibaldi F, Gayou O, Giuliani F, Gomez J, Gricia M, Hansen JO, Hayes D, Higinbotham DW, Holmstrom TK, Hyde CE, Ibrahim HF, Iodice M, Jiang X, Kaufman LJ, Kino K, Kross B, Lagamba L, LeRose JJ, Lindgren RA, Lucentini M, Margaziotis DJ, Markowitz P, Marrone S, Meziani ZE, McCormick K, Michaels RW, Millener DJ, Miyoshi T, Moffit B, Monaghan PA, Moteabbed M, Muñoz Camacho C, Nanda S, Nappi E, Nelyubin VV, Norum BE, Okasyasu Y, Paschke KD, Perdrisat CF, Piasetzky E, Punjabi VA, Qiang Y, Raue B, Reimer PE, Reinhold J, Reitz B, Roche RE, Rodriguez VM, Saha A, Santavenere F, Sarty AJ, Segal J, Shahinyan A, Singh J, Sirca S, Snyder R, Solvignon PH, Sotona M, Subedi R, Sulkosky VA, Suzuki T, Ueno H, Ulmer PE, Veneroni P, Voutier E, Wojtsekhowski BB, Zheng X, Zorn C. High-resolution spectroscopy of Lambda16N by electroproduction. Phys Rev Lett 2009; 103:202501. [PMID: 20365979 DOI: 10.1103/physrevlett.103.202501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 09/14/2009] [Indexed: 05/29/2023]
Abstract
An experimental study of the (16)O(e,e'K(+))(Lambda)(16)N reaction has been performed at Jefferson Lab. A thin film of falling water was used as a target. This permitted a simultaneous measurement of the p(e,e'K(+))Lambda, Sigma(0) exclusive reactions and a precise calibration of the energy scale. A ground-state binding energy of 13.76+/-0.16 MeV was obtained for (Lambda)(16)N with better precision than previous measurements on the mirror hypernucleus (Lambda)(16)O. Precise energies have been determined for peaks arising from a Lambda in s and p orbits coupled to the p(1/2) and p(3/2) hole states of the (15)N core nucleus.
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Affiliation(s)
- F Cusanno
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma, Piazzale Aldo Moro 2, I-00185 Rome, Italy
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22
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Airapetian A, Akopov N, Akopov Z, Aschenauer EC, Augustyniak W, Avetissian A, Avetisyan E, Bacchetta A, Ball B, Bianchi N, Blok HP, Böttcher H, Bonomo C, Borissov A, Bryzgalov V, Burns J, Capiluppi M, Capitani GP, Cisbani E, Ciullo G, Contalbrigo M, Dalpiaz PF, Deconinck W, De Leo R, De Nardo L, De Sanctis E, Diefenthaler M, Di Nezza P, Dreschler J, Düren M, Ehrenfried M, Elbakian G, Ellinghaus F, Elschenbroich U, Fabbri R, Fantoni A, Felawka L, Frullani S, Gabbert D, Gapienko G, Gapienko V, Garibaldi F, Gharibyan V, Giordano F, Gliske S, Hadjidakis C, Hartig M, Hasch D, Hill G, Hillenbrand A, Hoek M, Holler Y, Hristova I, Imazu Y, Ivanilov A, Jackson HE, Jo HS, Joosten S, Kaiser R, Keri T, Kinney E, Kisselev A, Korotkov V, Kozlov V, Kravchenko P, Lagamba L, Lamb R, Lapikás L, Lehmann I, Lenisa P, Linden-Levy LA, López Ruiz A, Lorenzon W, Lu XG, Lu XR, Ma BQ, Mahon D, Makins NCR, Manaenkov SI, Manfré L, Mao Y, Marianski B, Martinez de la Ossa A, Marukyan H, Miller CA, Miyachi Y, Movsisyan A, Murray M, Mussgiller A, Nappi E, Naryshkin Y, Nass A, Negodaev M, Nowak WD, Pappalardo LL, Perez-Benito R, Reimer PE, Reolon AR, Riedl C, Rith K, Rosner G, Rostomyan A, Rubin J, Ryckbosch D, Salomatin Y, Sanftl F, Schäfer A, Schnell G, Schüler KP, Seitz B, Shibata TA, Shutov V, Stancari M, Statera M, Steijger JJM, Stenzel H, Stewart J, Stinzing F, Taroian S, Terkulov A, Trzcinski A, Tytgat M, Vandenbroucke A, van der Nat PB, Van Haarlem Y, Van Hulse C, Varanda M, Veretennikov D, Vikhrov V, Vilardi I, Vogel C, Wang S, Yaschenko S, Ye H, Ye Z, Yen S, Yu W, Zeiler D, Zihlmann B, Zupranski P. Observation of the naive-T-odd Sivers effect in deep-inelastic scattering. Phys Rev Lett 2009; 103:152002. [PMID: 19905623 DOI: 10.1103/physrevlett.103.152002] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Indexed: 05/28/2023]
Abstract
Azimuthal single-spin asymmetries of leptoproduced pions and charged kaons were measured on a transversely polarized hydrogen target. Evidence for a naive-T-odd, transverse-momentum-dependent parton distribution function is deduced from nonvanishing Sivers effects for pi(+), pi(0), and K(+/-), as well as in the difference of the pi(+) and pi(-) cross sections.
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Affiliation(s)
- A Airapetian
- Physikalisches Institut, Universität Giessen, 35392 Giessen, Germany
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23
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Iodice M, Cusanno F, Acha A, Ambrozewicz P, Aniol KA, Baturin P, Bertin PY, Benaoum H, Blomqvist KI, Boeglin WU, Breuer H, Brindza P, Bydzovský P, Camsonne A, Chang CC, Chen JP, Choi S, Chudakov EA, Cisbani E, Colilli S, Coman L, Craver BJ, De Cataldo G, de Jager CW, De Leo R, Deur AP, Ferdi C, Feuerbach RJ, Folts E, Fratoni R, Frullani S, Garibaldi F, Gayou O, Giulani F, Gomez J, Gricia M, Hansen JO, Hayes D, Higinbotham DW, Holmstrom TK, Hyde CE, Ibrahim HF, Jiang X, Kaufman LJ, Kino K, Kross B, Lagamba L, LeRose JJ, Lindgren RA, Lucentini M, Margaziotis DJ, Markowitz P, Marrone S, Meziani ZE, McCormick K, Michaels RW, Millener DJ, Miyoshi T, Moffit B, Monaghan PA, Moteabbed M, Muñoz Camacho C, Nanda S, Nappi E, Nelyubin VV, Norum BE, Okasyasu Y, Paschke KD, Perdrisat CF, Piasetzky E, Punjabi VA, Qiang Y, Raue B, Reimer PE, Reinhold J, Reitz B, Roche RE, Rodriguez VM, Saha A, Santavenere F, Sarty AJ, Segal J, Shahinyan A, Singh J, Sirca S, Snyder R, Solvignon PH, Sotona M, Subedi R, Sulkosky VA, Suzuki T, Ueno H, Ulmer PE, Urciuoli GM, Veneroni P, Voutier E, Wojtsekhowski BB, Ye Y, Zheng X, Zhou S, Zorn C. High resolution spectroscopy of (lambda)(12)B by electroproduction. Phys Rev Lett 2007; 99:052501. [PMID: 17930747 DOI: 10.1103/physrevlett.99.052501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Indexed: 05/25/2023]
Abstract
An experiment measuring electroproduction of hypernuclei has been performed in hall A at Jefferson Lab on a 12C target. In order to increase counting rates and provide unambiguous kaon identification two superconducting septum magnets and a ring imaging Cherenkov detector were added to the hall A standard equipment. An unprecedented energy resolution of less than 700 keV FWHM has been achieved. Thus, the observed (Lambda)(12)B spectrum shows for the first time identifiable strength in the core-excited region between the ground-state s-wave Lambda peak and the 11 MeV p-wave Lambda peak.
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Affiliation(s)
- M Iodice
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, I-00146 Roma, Italy
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Airapetian A, Akopov N, Akopov Z, Amarian M, Andrus A, Aschenauer EC, Augustyniak W, Avakian R, Avetissian A, Avetissian E, Bailey P, Balin D, Beckmann M, Belostotski S, Bianchi N, Blok HP, Böttcher H, Borissov A, Borysenko A, Bouwhuis M, Brüll A, Bryzgalov V, Capiluppi M, Capitani GP, Chen T, Ciullo G, Contalbrigo M, Dalpiaz PF, Deconinck W, De Leo R, Demey M, De Nardo L, De Sanctis E, Devitsin E, Di Nezza P, Dreschler J, Düren M, Ehrenfried M, Elalaoui-Moulay A, Elbakian G, Ellinghaus F, Elschenbroich U, Fabbri R, Fantoni A, Felawka L, Frullani S, Funel A, Gapienko G, Gapienko V, Garibaldi F, Garrow K, Gaskell D, Gavrilov G, Gharibyan V, Grebeniouk O, Gregor IM, Hadjidakis C, Hafidi K, Hartig M, Hasch D, Hesselink WHA, Hillenbrand A, Hoek M, Holler Y, Hommez B, Hristova I, Iarygin G, Ivanilov A, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Kobayashi T, Kopytin M, Korotkov V, Kozlov V, Krauss B, Krivokhijine VG, Lagamba L, Lapikás L, Laziev A, Lenisa P, Liebing P, Linden-Levy LA, Lorenzon W, Lu H, Lu J, Lu S, Ma BQ, Maiheu B, Makins NCR, Mao Y, Marianski B, Marukyan H, Masoli F, Mexner V, Meyners N, Michler T, Mikloukho O, Miller CA, Miyachi Y, Muccifora V, Murray M, Nagaitsev A, Nappi E, Naryshkin Y, Negodaev M, Nowak WD, Oganessyan K, Ohsuga H, Osborne A, Pickert N, Potterveld DH, Raithel M, Reggiani D, Reimer PE, Reischl A, Reolon AR, Riedl C, Rith K, Rosner G, Rostomyan A, Rubacek L, Rubin J, Ryckbosch D, Salomatin Y, Sanjiev I, Savin I, Schäfer A, Schnell G, Schüler KP, Seele J, Seidl R, Seitz B, Shanidze R, Shearer C, Shibata TA, Shutov V, Sinram K, Sommer W, Stancari M, Statera M, Steffens E, Steijger JJM, Stenzel H, Stewart J, Stinzing F, Tait P, Tanaka H, Taroian S, Tchuiko B, Terkulov A, Trzcinski A, Tytgat M, Vandenbroucke A, van der Nat PB, van der Steenhoven G, van Haarlem Y, Vikhrov V, Vincter MG, Vogel C, Volmer J, Wang S, Wendland J, Ye Y, Ye Z, Yen S, Zihlmann B, Zupranski P. Beam-charge azimuthal asymmetry and deeply virtual Compton scattering. Int J Clin Exp Med 2007. [DOI: 10.1103/physrevd.75.011103] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Acha A, Aniol KA, Armstrong DS, Arrington J, Averett T, Bailey SL, Barber J, Beck A, Benaoum H, Benesch J, Bertin PY, Bosted P, Butaru F, Burtin E, Cates GD, Chao YC, Chen JP, Chudakov E, Cisbani E, Craver B, Cusanno F, De Leo R, Decowski P, Deur A, Feuerbach RJ, Finn JM, Frullani S, Fuchs SA, Fuoti K, Gilman R, Glesener LE, Grimm K, Grames JM, Hansen JO, Hansknecht J, Higinbotham DW, Holmes R, Holmstrom T, Ibrahim H, de Jager CW, Jiang X, Katich J, Kaufman LJ, Kelleher A, King PM, Kolarkar A, Kowalski S, Kuchina E, Kumar KS, Lagamba L, LaViolette P, LeRose J, Lindgren RA, Lhuillier D, Liyanage N, Margaziotis DJ, Markowitz P, Meekins DG, Meziani ZE, Michaels R, Moffit B, Nanda S, Nelyubin V, Otis K, Paschke KD, Phillips SK, Poelker M, Pomatsalyuk R, Potokar M, Prok Y, Puckett A, Qian X, Qiang Y, Reitz B, Roche J, Saha A, Sawatzky B, Singh J, Slifer K, Sirca S, Snyder R, Solvignon P, Souder PA, Stutzman ML, Subedi R, Suleiman R, Sulkosky V, Tobias WA, Ulmer PE, Urciuoli GM, Wang K, Whitbeck A, Wilson R, Wojtsekhowski B, Yao H, Ye Y, Zhan X, Zheng X, Zhou S, Ziskin V. Precision measurements of the nucleon strange form factors at Q2 approximately 0.1 GeV2. Phys Rev Lett 2007; 98:032301. [PMID: 17358678 DOI: 10.1103/physrevlett.98.032301] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Indexed: 05/14/2023]
Abstract
We report new measurements of the parity-violating asymmetry A(PV) in elastic scattering of 3 GeV electrons off hydrogen and 4He targets with <theta(lab)> approximately 6.0 degrees . The 4He result is A(PV)=(+6.40+/-0.23(stat)+/-0.12(syst))x10(-6). The hydrogen result is A(PV)=(-1.58+/-0.12(stat)+/-0.04(syst))x10(-6). These results significantly improve constraints on the electric and magnetic strange form factors G(E)(s) and G(M)(s). We extract G(E)(s)=0.002+/-0.014+/-0.007 at <Q(2)>=0.077 GeV2, and G(E)(s)+0.09G(M)(s)=0.007+/-0.011+/-0.006 at <Q(2)>=0.109 GeV2, providing new limits on the role of strange quarks in the nucleon charge and magnetization distributions.
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Affiliation(s)
- A Acha
- Florida International University, Miami, Florida 33199, USA
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Airapetian A, Akopov N, Akopov Z, Amarian M, Andrus A, Aschenauer EC, Augustyniak W, Avakian R, Avetissian A, Avetissian E, Bailey P, Belostotski S, Bianchi N, Blok HP, Böttcher H, Borissov A, Borysenko A, Brüll A, Bryzgalov V, Capiluppi M, Capitani GP, Ciullo G, Contalbrigo M, Dalpiaz PF, Deconinck W, De Leo R, Demey M, De Nardo L, De Sanctis E, Devitsin E, Diefenthaler M, Di Nezza P, Dreschler J, Düren M, Ehrenfried M, Elalaoui-Moulay A, Elbakian G, Ellinghaus F, Elschenbroich U, Fabbri R, Fantoni A, Felawka L, Frullani S, Funel A, Gapienko G, Gapienko V, Garibaldi F, Garrow K, Gavrilov G, Gharibyan V, Giordano F, Grebeniouk O, Gregor IM, Griffioen K, Guler H, Hadjidakis C, Hartig M, Hasch D, Hasegawa T, Hesselink WH, Hillenbrand A, Hoek M, Holler Y, Hommez B, Hristova I, Iarygin G, Ivanilov A, Izotov A, Jackson HE, Jgoun A, Kaiser R, Keri T, Kinney E, Kisselev A, Kobayashi T, Kopytin M, Korotkov V, Kozlov V, Krauss B, Kravchenko P, Krivokhijine VG, Lagamba L, Lapikás L, Lenisa P, Liebing P, Linden-Levy LA, Lorenzon W, Lu J, Lu S, Ma BQ, Maiheu B, Makins NCR, Mao Y, Marianski B, Marukyan H, Masoli F, Mexner V, Meyners N, Michler T, Mikloukho O, Miller CA, Miyachi Y, Muccifora V, Murray M, Nagaitsev A, Nappi E, Naryshkin Y, Negodaev M, Nowak WD, Ohsuga H, Osborne A, Perez-Benito R, Pickert N, Raithel M, Reggiani D, Reimer PE, Reischl A, Roelon AR, Riedl C, Rith K, Rosner G, Rostomyan A, Rubacek L, Rubin J, Ryckbosch D, Salomatin Y, Sanjiev I, Savin I, Schäfer A, Schnell G, Schüler KP, Seele J, Seidl R, Seitz B, Shearer C, Shibata TA, Shutov V, Sinram K, Stancari M, Statera M, Steffens E, Steijger JJM, Stenzel H, Stewart J, Stinzing F, Streit J, Tait P, Tanaka H, Taroian S, Tchuiko B, Terkulov A, Trzcinski A, Tytgat M, Vandenbroucke A, van der Nat PB, van der Steenhoven G, van Haarlem Y, Veretennikov D, Vikhrov V, Vogel C, Wang S, Ye Y, Ye Z, Yen S, Zihlmann B, Zupranski P. Double-hadron leptoproduction in the nuclear medium. Phys Rev Lett 2006; 96:162301. [PMID: 16712217 DOI: 10.1103/physrevlett.96.162301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2005] [Indexed: 05/09/2023]
Abstract
The first measurements of double-hadron production in deep-inelastic scattering within the nuclear medium were made with the HERMES spectrometer at DESY HERA using a 27.6 GeV positron beam. By comparing data for deuterium, nitrogen, krypton, and xenon nuclei, the influence of the nuclear medium on the ratio of double-hadron to single-hadron yields was investigated. Nuclear effects on the additional hadron are clearly observed, but with little or no difference among nitrogen, krypton, or xenon, and with smaller magnitude than effects seen on previously measured single-hadron multiplicities. The data are compared with models based on partonic energy loss or prehadronic scattering and with a model based on a purely absorptive treatment of the final-state interactions. Thus, the double-hadron ratio provides an additional tool for studying modifications of hadronization in nuclear matter.
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Affiliation(s)
- A Airapetian
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
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Airapetian A, Akopov N, Akopov Z, Amarian M, Ammosov VV, Andrus A, Aschenauer EC, Augustyniak W, Avakian R, Avetissian A, Avetissian E, Bailey P, Balin D, Baturin V, Beckmann M, Belostotski S, Bernreuther S, Bianchi N, Blok HP, Böttcher H, Borissov A, Borysenko A, Bouwhuis M, Brack J, Brüll A, Bryzgalov V, Capitani GP, Chen T, Chiang HC, Ciullo G, Contalbrigo M, Dalpiaz PF, De Leo R, Demey M, De Nardo L, De Sanctis E, Devitsin E, Di Nezza P, Dreschler J, Düren M, Ehrenfried M, Elalaoui-Moulay A, Elbakian G, Ellinghaus F, Elschenbroich U, Fabbri R, Fantoni A, Fechtchenko A, Felawka L, Fox B, Frullani S, Gapienko G, Gapienko V, Garibaldi F, Garrow K, Garutti E, Gaskell D, Gavrilov G, Gharibyan V, Graw G, Grebeniouk O, Greeniaus LG, Gregor IM, Hafidi K, Hartig M, Hasch D, Heesbeen D, Henoch M, Hertenberger R, Hesselink WHA, Hillenbrand A, Hoek M, Holler Y, Hommez B, Iarygin G, Ivanilov A, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Kopytin M, Korotkov V, Kozlov V, Krauss B, Krivokhijine VG, Lagamba L, Lapikás L, Laziev A, Lenisa P, Liebing P, Linden-Levy LA, Lipka K, Lorenzon W, Lu H, Lu J, Lu S, Ma BQ, Maiheu B, Makins NCR, Mao Y, Marianski B, Marukyan H, Masoli F, Mexner V, Meyners N, Mikloukho O, Miller CA, Miyachi Y, Muccifora V, Nagaitsev A, Nappi E, Naryshkin Y, Nass A, Negodaev M, Nowak WD, Oganessyan K, Ohsuga H, Pickert N, Potashov S, Potterveld DH, Raithel M, Reggiani D, Reimer PE, Reischl A, Reolon AR, Riedl C, Rith K, Rosner G, Rostomyan A, Rubacek L, Rubin J, Ryckbosch D, Salomatin Y, Sanjiev I, Savin I, Schäfer A, Schill C, Schnell G, Schüler KP, Seele J, Seidl R, Seitz B, Shanidze R, Shearer C, Shibata TA, Shutov V, Simani MC, Sinram K, Stancari M, Statera M, Steffens E, Steijger JJM, Stenzel H, Stewart J, Stinzing F, Stösslein U, Tait P, Tanaka H, Taroian S, Tchuiko B, Terkulov A, Tkabladze A, Trzcinski A, Tytgat M, Vandenbroucke A, van der Nat PB, van der Steenhoven G, Vetterli MC, Vikhrov V, Vincter MG, Vogel C, Vogt M, Volmer J, Weiskopf C, Wendland J, Wilbert J, Ye Y, Ye Z, Yen S, Zihlmann B, Zupranski P. Measurement of the tensor structure function b1 of the deuteron. Phys Rev Lett 2005; 95:242001. [PMID: 16384369 DOI: 10.1103/physrevlett.95.242001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2005] [Indexed: 05/05/2023]
Abstract
The Hermes experiment has investigated the tensor spin structure of the deuteron using the 27.6 GeV/c positron beam of DESY HERA. The use of a tensor-polarized deuteron gas target with only a negligible residual vector polarization enabled the first measurement of the tensor asymmetry A(d)zz and the tensor structure function b(d)1 for average values of the Bjorken variable 0.01< <x> <0.45 and of the negative of the squared four-momentum transfer 0.5 GeV2 < <Q2> <5 GeV2. The quantities A(d)zz and b(d)1 are found to be nonzero. The rise of b(d)1 for decreasing values of x can be interpreted to originate from the same mechanism that leads to nuclear shadowing in unpolarized scattering.
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Affiliation(s)
- A Airapetian
- Yerevan Physics Institute, 375036 Yerevan, Armenia
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Kelly JJ, Roché RE, Chai Z, Jones MK, Gayou O, Sarty AJ, Frullani S, Aniol K, Beise EJ, Benmokhtar F, Bertozzi W, Boeglin WU, Botto T, Brash EJ, Breuer H, Brown E, Burtin E, Calarco JR, Cavata C, Chang CC, Chant NS, Chen JP, Coman M, Crovelli D, De Leo R, Dieterich S, Escoffier S, Fissum KG, Garde V, Garibaldi F, Georgakopoulus S, Gilad S, Gilman R, Glashausser C, Hansen JO, Higinbotham DW, Hotta A, Huber GM, Ibrahim H, Iodice M, de Jager CW, Jiang X, Klimenko A, Kozlov A, Kumbartzki G, Kuss M, Lagamba L, Laveissière G, Lerose JJ, Lindgren RA, Liyanage N, Lolos GJ, Lourie RW, Margaziotis DJ, Marie F, Markowitz P, McAleer S, Meekins D, Michaels R, Milbrath BD, Mitchell J, Nappa J, Neyret D, Perdrisat CF, Potokar M, Punjabi VA, Pussieux T, Ransome RD, Roos PG, Rvachev M, Saha A, Sirca S, Suleiman R, Strauch S, Templon JA, Todor L, Ulmer PE, Urciuoli GM, Weinstein LB, Wijesooriya K, Wojtsekhowski B, Zheng X, Zhu L. Recoil polarization for delta excitation in pion electroproduction. Phys Rev Lett 2005; 95:102001. [PMID: 16196919 DOI: 10.1103/physrevlett.95.102001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Indexed: 05/04/2023]
Abstract
We measured angular distributions of recoil-polarization response functions for neutral pion electroproduction for W = 1.23 GeV at Q(2) = 1.0 (GeV/c)(2), obtaining 14 separated response functions plus 2 Rosenbluth combinations; of these, 12 have been observed for the first time. Dynamical models do not describe quantities governed by imaginary parts of interference products well, indicating the need for adjusting magnitudes and phases for nonresonant amplitudes. We performed a nearly model-independent multipole analysis and obtained values for Re (S(1+)/M(1+)) = -(6.84 +/- 0.15)% and Re (E(1+)/M(1+)) = -(2.91 +/- 0.19)% that are distinctly different from those from the traditional Legendre analysis based upon M1+ dominance and ll(pi) < or = 1 truncation.
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Affiliation(s)
- J J Kelly
- Department of Physics, University of Maryland, College Park, 20742, USA
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Rvachev MM, Benmokhtar F, Penel-Nottaris E, Aniol KA, Bertozzi W, Boeglin WU, Butaru F, Calarco JR, Chai Z, Chang CC, Chen JP, Chudakov E, Cisbani E, Cochran A, Cornejo J, Dieterich S, Djawotho P, Duran W, Epstein MB, Finn JM, Fissum KG, Frahi-Amroun A, Frullani S, Furget C, Garibaldi F, Gayou O, Gilad S, Gilman R, Glashausser C, Hansen JO, Higinbotham DW, Hotta A, Hu B, Iodice M, Iomni R, de Jager CW, Jiang X, Jones MK, Kelly JJ, Kox S, Kuss M, Laget JM, De Leo R, Lerose JJ, Liatard E, Lindgren R, Liyanage N, Lourie RW, Malov S, Margaziotis DJ, Markowitz P, Merchez F, Michaels R, Mitchell J, Mougey J, Perdrisat CF, Punjabi VA, Quéméner G, Ransome RD, Réal JS, Roché R, Sabatié F, Saha A, Simon D, Strauch S, Suleiman R, Tamae T, Templon JA, Tieulent R, Ueno H, Ulmer PE, Urciuoli GM, Voutier E, Wijesooriya K, Wojtsekhowski B. Quasielastic 3He(e,e'p)2H reaction at Q2 = 1.5 GeV2 for recoil momenta up to 1 GeV/c. Phys Rev Lett 2005; 94:192302. [PMID: 16090165 DOI: 10.1103/physrevlett.94.192302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2004] [Indexed: 05/03/2023]
Abstract
We have studied the quasielastic 3He(e,e(')p)2H reaction in perpendicular coplanar kinematics, with the energy and the momentum transferred by the electron fixed at 840 MeV and 1502 MeV/c, respectively. The 3He(e,e(')p)2H cross section was measured for missing momenta up to 1000 MeV/c, while the A(TL) asymmetry was extracted for missing momenta up to 660 MeV/c. For missing momenta up to 150 MeV/c, the cross section is described by variational calculations using modern 3He wave functions. For missing momenta from 150 to 750 MeV/c, strong final-state interaction effects are observed. Near 1000 MeV/c, the experimental cross section is more than an order of magnitude larger than predicted by available theories. The A(TL) asymmetry displays characteristic features of broken factorization with a structure that is similar to that generated by available models.
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Affiliation(s)
- M M Rvachev
- Massachusetts Institute of Technology, Cambridge, 02139, USA
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Benmokhtar F, Rvachev MM, Penel-Nottaris E, Aniol KA, Bertozzi W, Boeglin WU, Butaru F, Calarco JR, Chai Z, Chang CC, Chen JP, Chudakov E, Cisbani E, Cochran A, Cornejo J, Dieterich S, Djawotho P, Duran W, Epstein MB, Finn JM, Fissum KG, Frahi-Amroun A, Frullani S, Furget C, Garibaldi F, Gayou O, Gilad S, Gilman R, Glashausser C, Hansen JO, Higinbotham DW, Hotta A, Hu B, Iodice M, Iomni R, de Jager CW, Jiang X, Jones MK, Kelly JJ, Kox S, Kuss M, Laget JM, De Leo R, Lerose JJ, Liatard E, Lindgren R, Liyanage N, Lourie RW, Malov S, Margaziotis DJ, Markowitz P, Merchez F, Michaels R, Mitchell J, Mougey J, Perdrisat CF, Punjabi VA, Quéméner G, Ransome RD, Réal JS, Roché R, Sabatié F, Saha A, Simon D, Strauch S, Suleiman R, Tamae T, Templon JA, Tieulent R, Ueno H, Ulmer PE, Urciuoli GM, Voutier E, Wijesooriya K, Wojtsekhowski B. Measurement of the 3He(e,e'p)pn reaction at high missing energies and momenta. Phys Rev Lett 2005; 94:082305. [PMID: 15783882 DOI: 10.1103/physrevlett.94.082305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2004] [Indexed: 05/24/2023]
Abstract
Results of the Jefferson Lab Hall A quasielastic 3He(e,e'p)pn measurements are presented. These measurements were performed at fixed transferred momentum and energy, q=1502 MeV/c and omega=840 MeV, respectively, for missing momenta p(m) up to 1 GeV/c and missing energies in the continuum region, up to pion threshold; this kinematic coverage is much more extensive than that of any previous experiment. The cross section data are presented along with the effective momentum density distribution and compared to theoretical models.
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Affiliation(s)
- F Benmokhtar
- Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
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Airapetian A, Akopov N, Akopov Z, Amarian M, Andrus A, Aschenauer EC, Augustyniak W, Avakian R, Avetissian A, Avetissian E, Bacchetta A, Bailey P, Balin D, Beckmann M, Belostotski S, Bianchi N, Blok HP, Böttcher H, Borissov A, Borysenko A, Bouwhuis M, Brüll A, Bryzgalov V, Capitani GP, Cappiluppi M, Chen T, Ciullo G, Contalbrigo M, Dalpiaz PF, Leo RD, Demey M, Nardo LD, Sanctis ED, Devitsin E, Nezza PD, Düren M, Ehrenfried M, Elalaoui-Moulay A, Elbakian G, Ellinghaus F, Elschenbroich U, Fabbri R, Fantoni A, Fechtchenko A, Felawka L, Frullani S, Gapienko G, Gapienko V, Garibaldi F, Garrow K, Gavrilov G, Gharibyan V, Grebeniouk O, Gregor IM, Hadjidakis C, Hafidi K, Hartig M, Hasch D, Henoch M, Hesselink WHA, Hillenbrand A, Hoek M, Holler Y, Hommez B, Hristova I, Iarygin G, Ilyichev A, Ivanilov A, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Kobayashi T, Kopytin M, Korotkov V, Kozlov V, Krauss B, Krivokhijine VG, Lagamba L, Lapikás L, Laziev A, Lenisa P, Liebing P, Linden-Levy LA, Lorenzon W, Lu H, Lu J, Lu S, Ma BQ, Maiheu B, Makins NCR, Mao Y, Marianski B, Marukyan H, Masoli F, Mexner V, Meyners N, Michler T, Mikloukho O, Miller CA, Miyachi Y, Muccifora V, Nagaitsev A, Nappi E, Naryshkin Y, Nass A, Negodaev M, Nowak WD, Oganessyan K, Ohsuga H, Osborne A, Pickert N, Potterveld DH, Raithel M, Reggiani D, Reimer PE, Reischl A, Reolon AR, Riedl C, Rith K, Rosner G, Rostomyan A, Rubacek L, Rubin J, Ryckbosch D, Salomatin Y, Sanjiev I, Savin I, Schäfer A, Schill C, Schnell G, Schüler KP, Seele J, Seidl R, Seitz B, Shanidze R, Shearer C, Shibata TA, Shutov V, Sinram K, Sommer W, Stancari M, Statera M, Steffens E, Steijger JJM, Stenzel H, Stewart J, Stinzing F, Tait P, Tanaka H, Taroian S, Tchuiko B, Terkulov A, Trzcinski A, Tytgat M, Vandenbroucke A, van der Nat PB, van der Steenhoven G, van Haarlem Y, Vetterli MC, Vikhrov V, Vincter MG, Vogel C, Volmer J, Wang S, Wendland J, Wilbert J, Smit GY, Ye Y, Ye Z, Yen S, Zihlmann B, Zupranski P. Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target. Phys Rev Lett 2005; 94:012002. [PMID: 15698069 DOI: 10.1103/physrevlett.94.012002] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2004] [Indexed: 05/24/2023]
Abstract
Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (phi) and the target spin axis (phi(S)) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component sin((phi+phi(S))(pi)(UT) is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component sin((phi-phi(S)(pi)(UT) arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.
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Affiliation(s)
- A Airapetian
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109-1120, USA
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Laveissière G, Todor L, Degrande N, Jaminion S, Jutier C, Di Salvo R, Van Hoorebeke L, Alexa LC, Anderson BD, Aniol KA, Arundell K, Audit G, Auerbach L, Baker FT, Baylac M, Berthot J, Bertin PY, Bertozzi W, Bimbot L, Boeglin WU, Brash EJ, Breton V, Breuer H, Burtin E, Calarco JR, Cardman LS, Cavata C, Chang CC, Chen JP, Chudakov E, Cisbani E, Dale DS, de Jager CW, De Leo R, Deur A, d'Hose N, Dodge GE, Domingo JJ, Elouadrhiri L, Epstein MB, Ewell LA, Finn JM, Fissum KG, Fonvieille H, Fournier G, Frois B, Frullani S, Furget C, Gao H, Gao J, Garibaldi F, Gasparian A, Gilad S, Gilman R, Glamazdin A, Glashausser C, Gomez J, Gorbenko V, Grenier P, Guichon PAM, Hansen JO, Holmes R, Holtrop M, Howell C, Huber GM, Hyde-Wright CE, Incerti S, Iodice M, Jardillier J, Jones MK, Kahl W, Kato S, Katramatou AT, Kelly JJ, Kerhoas S, Ketikyan A, Khayat M, Kino K, Kox S, Kramer LH, Kumar KS, Kumbartzki G, Kuss M, Leone A, LeRose JJ, Liang M, Lindgren RA, Liyanage N, Lolos GJ, Lourie RW, Madey R, Maeda K, Malov S, Manley DM, Marchand C, Marchand D, Margaziotis DJ, Markowitz P, Marroncle J, Martino J, McCormick K, McIntyre J, Mehrabyan S, Merchez F, Meziani ZE, Michaels R, Miller GW, Mougey JY, Nanda SK, Neyret D, Offermann EAJM, Papandreou Z, Pasquini B, Perdrisat CF, Perrino R, Petratos GG, Platchkov S, Pomatsalyuk R, Prout DL, Punjabi VA, Pussieux T, Quémenér G, Ransome RD, Ravel O, Real JS, Renard F, Roblin Y, Rowntree D, Rutledge G, Rutt PM, Saha A, Saito T, Sarty AJ, Serdarevic A, Smith T, Smirnov G, Soldi K, Sorokin P, Souder PA, Suleiman R, Templon JA, Terasawa T, Tieulent R, Tomasi-Gustaffson E, Tsubota H, Ueno H, Ulmer PE, Urciuoli GM, Vanderhaeghen M, Van De Vyver R, Van der Meer RLJ, Vernin P, Vlahovic B, Voskanyan H, Voutier E, Watson JW, Weinstein LB, Wijesooriya K, Wilson R, Wojtsekhowski BB, Zainea DG, Zhang WM, Zhao J, Zhou ZL. Measurement of the generalized polarizabilities of the proton in virtual Compton scattering at Q2=0.92 and 1.76 GeV2. Phys Rev Lett 2004; 93:122001. [PMID: 15447252 DOI: 10.1103/physrevlett.93.122001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2003] [Indexed: 05/24/2023]
Abstract
We report a virtual Compton scattering study of the proton at low c.m. energies. We have determined the structure functions P(LL)-P(TT)/epsilon and P(LT), and the electric and magnetic generalized polarizabilities (GPs) alpha(E)(Q2) and beta(M)(Q2) at momentum transfer Q(2)=0.92 and 1.76 GeV2. The electric GP shows a strong falloff with Q2, and its global behavior does not follow a simple dipole form. The magnetic GP shows a rise and then a falloff; this can be interpreted as the dominance of a long-distance diamagnetic pion cloud at low Q2, compensated at higher Q2 by a paramagnetic contribution from piN intermediate states.
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Affiliation(s)
- G Laveissière
- Université Blaise Pascal/IN2P3, F-63177 Aubière, France
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Airapetian A, Akopov N, Akopov Z, Amarian M, Ammosov VV, Andrus A, Aschenauer EC, Augustyniak W, Avakian R, Avetissian A, Avetissian E, Bailey P, Baturin V, Baumgarten C, Beckmann M, Belostotski S, Bernreuther S, Bianchi N, Blok HP, Böttcher H, Borissov A, Bouwhuis M, Brack J, Brüll A, Bryzgalov V, Capitani GP, Chiang HC, Ciullo G, Contalbrigo M, Dalpiaz PF, De Leo R, De Nardo L, De Sanctis E, Devitsin E, Di Nezza P, Düren M, Ehrenfried M, Elalaoui-Moulay A, Elbakian G, Ellinghaus F, Elschenbroich U, Ely J, Fabbri R, Fantoni A, Fechtchenko A, Felawka L, Fox B, Franz J, Frullani S, Gärber Y, Gapienko G, Gapienko V, Garibaldi F, Garrow K, Garutti E, Gaskell D, Gavrilov G, Gharibyan V, Graw G, Grebeniouk O, Greeniaus LG, Hafidi K, Hartig M, Hasch D, Heesbeen D, Henoch M, Hertenberger R, Hesselink WHA, Hillenbrand A, Hoek M, Holler Y, Hommez B, Iarygin G, Ivanilov A, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Königsmann K, Kopytin M, Korotkov V, Kozlov V, Krauss B, Krivokhijine VG, Lagamba L, Lapikás L, Laziev A, Lenisa P, Liebing P, Lindemann T, Lipka K, Lorenzon W, Lu J, Maiheu B, Makins NCR, Marianski B, Marukyan H, Masoli F, Mexner V, Meyners N, Mikloukho O, Miller CA, Miyachi Y, Muccifora V, Nagaitsev A, Nappi E, Naryshkin Y, Nass A, Negodaev M, Nowak WD, Oganessyan K, Ohsuga H, Orlandi G, Pickert N, Potashov S, Potterveld DH, Raithel M, Reggiani D, Reimer PE, Reischl A, Reolon AR, Riedl C, Rith K, Rosner G, Rostomyan A, Rubacek L, Ryckbosch D, Salomatin Y, Sanjiev I, Savin I, Scarlett C, Schäfer A, Schill C, Schnell G, Schüler KP, Schwind A, Seele J, Seidl R, Seitz B, Shanidze R, Shearer C, Shibata TA, Shutov V, Simani MC, Sinram K, Stancari M, Statera M, Steffens E, Steijger JJM, Stewart J, Stösslein U, Tait P, Tanaka H, Taroian S, Tchuiko B, Terkulov A, Tkabladze A, Trzcinski A, Tytgat M, Vandenbroucke A, Van Der Nat P, Van Der Steenhoven G, Vetterli MC, Vikhrov V, Vincter MG, Visser J, Vogel C, Vogt M, Volmer J, Weiskopf C, Wendland J, Wilbert J, Ybeles Smit G, Yen S, Zihlmann B, Zohrabian H, Zupranski P. Flavor decomposition of the sea-quark helicity distributions in the nucleon from semiinclusive deep inelastic scattering. Phys Rev Lett 2004; 92:012005. [PMID: 14753985 DOI: 10.1103/physrevlett.92.012005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2003] [Indexed: 05/24/2023]
Abstract
Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with reanalyzed previous data for identified pions from a hydrogen target. These distributions are consistent with zero for all three sea flavors. A recently predicted flavor asymmetry in the polarization of the light quark sea appears to be disfavored by the data.
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Affiliation(s)
- A Airapetian
- Yerevan Physics Institute, 375036 Yerevan, Armenia
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Zheng X, Aniol K, Armstrong DS, Averett TD, Bertozzi W, Binet S, Burtin E, Busato E, Butuceanu C, Calarco J, Camsonne A, Cates GD, Chai Z, Chen JP, Choi S, Chudakov E, Cusanno F, Leo RD, Deur A, Dieterich S, Dutta D, Finn JM, Frullani S, Gao H, Gao J, Garibaldi F, Gilad S, Gilman R, Gomez J, Hansen JO, Higinbotham DW, Hinton W, Horn T, De Jager CW, Jiang X, Kaufman L, Kelly J, Korsch W, Kramer K, LeRose J, Lhuillier D, Liyanage N, Margaziotis DJ, Marie F, Markowitz P, McCormick K, Meziani ZE, Michaels R, Moffit B, Nanda S, Neyret D, Phillips SK, Powell A, Pussieux T, Reitz B, Roche J, Roche R, Roedelbronn M, Ron G, Rvachev M, Saha A, Savvinov N, Singh J, Sirca S, Slifer K, Solvignon P, Souder P, Steiner DJ, Strauch S, Sulkosky V, Tobias A, Urciuoli G, Vacheret A, Wojtsekhowski B, Xiang H, Xiao Y, Xiong F, Zhang B, Zhu L, Zhu X, Zołnierczuk PA. Precision measurement of the neutron spin asymmetryA(n)(1) and spin-flavor decomposition in the valence quark region. Phys Rev Lett 2004; 92:012004. [PMID: 14753984 DOI: 10.1103/physrevlett.92.012004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2003] [Indexed: 05/24/2023]
Abstract
We have measured the neutron spin asymmetry A(n)(1) with high precision at three kinematics in the deep inelastic region at x=0.33, 0.47, and 0.60, and Q(2)=2.7, 3.5, and 4.8 (GeV/c)(2), respectively. Our results unambiguously show, for the first time, that A(n)(1) crosses zero around x=0.47 and becomes significantly positive at x=0.60. Combined with the world proton data, polarized quark distributions were extracted. Our results, in general, agree with relativistic constituent quark models and with perturbative quantum chromodynamics (PQCD) analyses based on the earlier data. However they deviate from PQCD predictions based on hadron helicity conservation.
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Affiliation(s)
- X Zheng
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Strauch S, Dieterich S, Aniol KA, Annand JRM, Baker OK, Bertozzi W, Boswell M, Brash EJ, Chai Z, Chen JP, Christy ME, Chudakov E, Cochran A, De Leo R, Ent R, Epstein MB, Finn JM, Fissum KG, Forest TA, Frullani S, Garibaldi F, Gasparian A, Gayou O, Gilad S, Gilman R, Glashausser C, Gomez J, Gorbenko V, Gueye PLJ, Hansen JO, Higinbotham DW, Hu B, Hyde-Wright CE, Ireland DG, Jackson C, de Jager CW, Jiang X, Jones C, Jones MK, Kellie JD, Kelly JJ, Keppel CE, Kumbartzki G, Kuss M, LeRose JJ, Livingston K, Liyanage N, Malov S, Margaziotis DJ, Meekins D, Michaels R, Mitchell JH, Nanda SK, Nappa J, Perdrisat CF, Punjabi VA, Ransome RD, Roché R, Rosner G, Rvachev M, Sabatie F, Saha A, Sarty A, Udias JM, Ulmer PE, Urciuoli GM, van den Brand JFJ, Vignote JR, Watts DP, Weinstein LB, Wijesooriya K, Wojtsekhowski B. Polarization transfer in the 4He(e-->,e'p-->)3H reaction up to Q2=2.6 (GeV/c)2. Phys Rev Lett 2003; 91:052301. [PMID: 12906589 DOI: 10.1103/physrevlett.91.052301] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2002] [Revised: 05/05/2003] [Indexed: 05/24/2023]
Abstract
We have measured the proton recoil polarization in the 4He(e-->,e(')p-->)4H reaction at Q(2)=0.5, 1.0, 1.6, and 2.6 (GeV/c)(2). The measured ratio of polarization transfer coefficients differs from a fully relativistic calculation, favoring the inclusion of a medium modification of the proton form factors predicted by a quark-meson coupling model. In addition, the measured induced polarizations agree reasonably well with the fully relativistic calculation indicating that the treatment of final-state interactions is under control.
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Affiliation(s)
- S Strauch
- Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
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Airapetian A, Akopov N, Akopov Z, Amarian M, Ammosov VV, Aschenauer EC, Avakian H, Avakian R, Avetissian A, Avetissian E, Bailey P, Baturin V, Baumgarten C, Beckmann M, Belostotski S, Bernreuther S, Bianchi N, Blok HP, Böttcher H, Borissov A, Bouhali O, Bouwhuis M, Brack J, Brauksiepe S, Brüll A, Brunn I, Bulten HJ, Capitani GP, Cisbani E, Ciullo G, Court GR, Dalpiaz PF, De Leo R, De Nardo L, De Sanctis E, Devitsin E, de Witt Huberts PKA, Di Nezza P, Düren M, Ehrenfried M, Elbakian G, Ellinghaus F, Elschenbroich U, Ely J, Fabbri R, Fantoni A, Fechtchenko A, Felawka L, Filippone BW, Fischer H, Fox B, Franz J, Frullani S, Gärber Y, Gapienko V, Garibaldi F, Garutti E, Gavrilov G, Gharibyan V, Graw G, Grebeniouk O, Green PW, Greeniaus LG, Gute A, Haeberli W, Hafidi K, Hartig M, Hasch D, Heesbeen D, Heinsius FH, Henoch M, Hertenberger R, Hesselink WHA, Hofman G, Holler Y, Holt RJ, Hommez B, Iarygin G, Izotov A, Jackson HE, Jgoun A, Jung P, Kaiser R, Kinney E, Kisselev A, Kitching P, Königsmann K, Kolster H, Kopytin M, Korotkov V, Kotik E, Kozlov V, Krauss B, Krivokhijine VG, Kyle G, Lagamba L, Laziev A, Lenisa P, Liebing P, Lindemann T, Lorenzon W, Maas A, Makins NCR, Marukyan H, Masoli F, Menden F, Mexner V, Meyners N, Mikloukho O, Miller CA, Muccifora V, Nagaitsev A, Nappi E, Naryshkin Y, Nass A, Negodaeva K, Nowak WD, Oganessyan K, Orlandi G, Podiatchev S, Potashov S, Potterveld DH, Raithel M, Rappoport V, Reggiani D, Reimer P, Reischl A, Reolon AR, Rith K, Rostomyan A, Ryckbosch D, Sakemi Y, Sanjiev I, Sato F, Savin I, Scarlett C, Schäfer A, Schill C, Schmidt F, Schnell G, Schüler KP, Schwind A, Seibert J, Seitz B, Shanidze R, Shibata TA, Shutov V, Simani MC, Sinram K, Stancari M, Steffens E, Steijger JJM, Stewart J, Stösslein U, Suetsugu K, Taroian S, Terkulov A, Tessarin S, Thomas E, Tipton B, Tytgat M, Urciuoli GM, van den Brand JFJ, van der Steenhoven G, van de Vyver R, Vetterli MC, Vikhrov V, Vincter MG, Visser J, Volmer J, Weiskopf C, Wendland J, Wilbert J, Wise T, Yen S, Yoneyama S, Zihlmann B, Zohrabian H. Evidence for quark-hadron duality in the proton spin asymmetry A1. Phys Rev Lett 2003; 90:092002. [PMID: 12689215 DOI: 10.1103/physrevlett.90.092002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2002] [Indexed: 05/24/2023]
Abstract
Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were scattered off a longitudinally polarized hydrogen target for values of Q2 between 1.2 and 12 GeV2 and values of W2 between 1 and 4 GeV2. The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable x. This finding implies that the description of A1 in terms of quark degrees of freedom is valid also in the nucleon resonance region for values of Q2 above 1.6 GeV2.
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Affiliation(s)
- A Airapetian
- Yerevan Physics Institute, 375036, Yerevan, Armenia
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Airapetian A, Akopov N, Akopov Z, Amarian M, Ammosov VV, Andrus A, Aschenauer EC, Augustyniak W, Avakian R, Avetissian A, Avetissian E, Bailey P, Baturin V, Baumgarten C, Beckmann M, Belostotski S, Bernreuther S, Bianchi N, Blok HP, Böttcher H, Borissov A, Bouwhuis M, Brack J, Brüll A, Brunn I, Capitani GP, Chiang HC, Ciullo G, Contalbrigo M, Court GR, Dalpiaz PF, De Leo R, De Nardo L, De Sanctis E, Devitsin E, Di Nezza P, Düren M, Ehrenfried M, Elalaoui-Moulay A, Elbakian G, Ellinghaus F, Elschenbroich U, Ely J, Fabbri R, Fantoni A, Fechtchenko A, Felawka L, Fox B, Franz J, Frullani S, Gärber Y, Gapienko G, Gapienko V, Garibaldi F, Garutti E, Gaskell D, Gavrilov G, Gharibyan V, Graw G, Grebeniouk O, Greeniaus LG, Haeberli W, Hafidi K, Hartig M, Hasch D, Heesbeen D, Henoch M, Hertenberger R, Hesselink WHA, Hillenbrand A, Holler Y, Hommez B, Iarygin G, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Königsmann K, Kolster H, Kopytin M, Korotkov V, Kozlov V, Krauss B, Krivokhijine VG, Lagamba L, Lapikás L, Laziev A, Lenisa P, Liebing P, Lindemann T, Lorenzon W, Makins NCR, Marukyan H, Masoli F, Menden F, Mexner V, Meyners N, Mikloukho O, Miller CA, Miyachi Y, Muccifora V, Nagaitsev A, Nappi E, Naryshkin Y, Nass A, Negodaeva K, Nowak WD, Oganessyan K, Ohsuga H, Orlandi G, Podiatchev S, Potashov S, Potterveld DH, Raithel M, Reggiani D, Reimer P, Reischl A, Reolon AR, Rith K, Rosner G, Rostomyan A, Ryckbosch D, Sanjiev I, Savin I, Scarlett C, Schäfer A, Schill C, Schnell G, Schüler KP, Schwind A, Seibert J, Seitz B, Shanidze R, Shibata TA, Shutov V, Simani MC, Sinram K, Stancari M, Statera M, Steffens E, Steijger JJM, Stewart J, Stösslein U, Tanaka H, Taroian S, Tchuiko B, Terkulov A, Tessarin S, Thomas E, Tkabladze A, Trzcinski A, Tytgat M, Urciuoli GM, Van Der Nat P, Van Der Steenhoven G, Van De Vyver R, Vetterli MC, Vikhrov V, Vincter MG, Visser J, Vogt M, Volmer J, Weiskopf C, Wendland J, Wilbert J, Wise T, Yen S, Yoneyama S, Zihlmann B, Zohrabian H, Zupranski P. Q2 dependence of nuclear transparency for exclusive rho0 production. Phys Rev Lett 2003; 90:052501. [PMID: 12633347 DOI: 10.1103/physrevlett.90.052501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2002] [Indexed: 05/24/2023]
Abstract
Exclusive coherent and incoherent electroproduction of the rho(0) meson from 1H and 14N targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual photon, and squared four-momentum of the virtual photon (-Q2). The ratio of 14N to 1H cross sections per nucleon, called nuclear transparency, was found to increase (decrease) with increasing l(c) for coherent (incoherent) rho(0) electroproduction. For fixed l(c), a rise of nuclear transparency with Q2 is observed for both coherent and incoherent rho(0) production, which is in agreement with theoretical calculations of color transparency.
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Gayou O, Aniol KA, Averett T, Benmokhtar F, Bertozzi W, Bimbot L, Brash EJ, Calarco JR, Cavata C, Chai Z, Chang CC, Chang T, Chen JP, Chudakov E, De Leo R, Dieterich S, Endres R, Epstein MB, Escoffier S, Fissum KG, Fonvieille H, Frullani S, Gao J, Garibaldi F, Gilad S, Gilman R, Glamazdin A, Glashausser C, Gomez J, Gorbenko V, Hansen JO, Higinbotham DW, Huber GM, Iodice M, de Jager CW, Jiang X, Jones MK, Kelly JJ, Khandaker M, Kozlov A, Kramer KM, Kumbartzki G, LeRose JJ, Lhuillier D, Lindgren RA, Liyanage N, Lolos GJ, Margaziotis DJ, Marie F, Markowitz P, McCormick K, Michaels R, Milbrath BD, Nanda SK, Neyret D, Papandreou Z, Pentchev L, Perdrisat CF, Piskunov NM, Punjabi V, Pussieux T, Quéméner G, Ransome RD, Raue BA, Roché R, Rvachev M, Saha A, Salgado C, Sirca S, Sitnik I, Strauch S, Todor L, Tomasi-Gustafsson E, Urciuoli GM, Voskanyan H, Wijesooriya K, Wojtsekhowski BB, Zheng X, Zhu L. Measurement of G(E(p))/G(M(p)) in e(-->)p---> e(-->)p to Q(2) = 5.6 GeV(2). Phys Rev Lett 2002; 88:092301. [PMID: 11863996 DOI: 10.1103/physrevlett.88.092301] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2001] [Indexed: 05/23/2023]
Abstract
The ratio of the electric and magnetic form factors of the proton G(E(p))/G(M(p)), which is an image of its charge and magnetization distributions, was measured at the Thomas Jefferson National Accelerator Facility (JLab) using the recoil polarization technique. The ratio of the form factors is directly proportional to the ratio of the transverse to longitudinal components of the polarization of the recoil proton in the elastic e(-->)p---> e(-->)p reaction. The new data presented span the range 3.5< Q(2)< 5.6 GeV(2) and are well described by a linear Q(2) fit. Also, the ratio sqrt[Q(2)] F(2(p))/F(1(p)) reaches a constant value above Q(2) = 2 GeV(2).
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Affiliation(s)
- O Gayou
- College of William and Mary, Williamsburg, VA 23187, USA
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40
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Liyanage N, Anderson BD, Aniol KA, Auerbach L, Baker FT, Berthot J, Bertozzi W, Bertin PY, Bimbot L, Boeglin WU, Brash EJ, Breton V, Breuer H, Burtin E, Calarco JR, Cardman L, Cates GD, Cavata C, Chang CC, Chen JP, Cisbani E, Dale DS, De Leo R, Deur A, Diederich B, Djawotho P, Domingo J, Doyle B, Ducret JE, Epstein MB, Ewell LA, Finn JM, Fissum KG, Fonvieille H, Frois B, Frullani S, Gao J, Garibaldi F, Gasparian A, Gilad S, Gilman R, Glamazdin A, Glashausser C, Gomez J, Gorbenko V, Gorringe T, Hersman FW, Holmes R, Holtrop M, d'Hose N, Howell C, Huber GM, Hyde-Wright CE, Iodice M, de Jager CW, Jaminion S, Jones MK, Joo K, Jutier C, Kahl W, Kato S, Kelly JJ, Kerhoas S, Khandaker M, Khayat M, Kino K, Korsch W, Kramer L, Kumar KS, Kumbartzki G, Laveissière G, Leone A, LeRose JJ, Levchuk L, Liang M, Lindgren RA, Lolos GJ, Lourie RW, Madey R, Maeda K, Malov S, Manley DM, Margaziotis DJ, Markowitz P, Martino J, McCarthy JS, McCormick K, McIntyre J, van der Meer RL, Meziani ZE, Michaels R, Mougey J, Nanda S, Neyret D, Offermann EA, Papandreou Z, Perdrisat CF, Perrino R, Petratos GG, Platchkov S, Pomatsalyuk R, Prout DL, Punjabi VA, Pussieux T, Quéméner G, Ransome RD, Ravel O, Roblin Y, Roche R, Rowntree D, Rutledge GA, Rutt PM, Saha A, Saito T, Sarty AJ, Serdarevic-Offermann A, Smith TP, Soldi A, Sorokin P, Souder P, Suleiman R, Templon JA, Terasawa T, Todor L, Tsubota H, Ueno H, Ulmer PE, Urciuoli GM, Vernin P, van Verst S, Vlahovic B, Voskanyan H, Watson JW, Weinstein LB, Wijesooriya K, Wilson R, Wojtsekhowski B, Zainea DG, Zeps V, Zhao J, Zhou ZL. Dynamics of the 16O(e, e'p) reaction at high missing energies. Phys Rev Lett 2001; 86:5670-5674. [PMID: 11415329 DOI: 10.1103/physrevlett.86.5670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2000] [Indexed: 05/23/2023]
Abstract
We measured the cross section and response functions for the quasielastic 16O(e,e'p) reaction for missing energies 25< or =E(m)< or =120 MeV at missing momenta P(m)< or =340 MeV/c. For 25<E(m)<50 MeV and P(m) approximately 60 MeV/c, the reaction is dominated by a single 1s(1/2) proton knockout. At larger P(m), the single-particle aspects are increasingly masked by more complicated processes. Calculations which include pion exchange currents, isobar currents, and short-range correlations account for the shape and the transversity, but for only half of the magnitude of the measured cross section.
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Affiliation(s)
- N Liyanage
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Abstract
The nuclear p300 protein functions as a co-activator of gene transcription. Here we show that p300 works as a co-activator of the transcription factor Pax 8 on the thyroperoxidase gene promoter. Consistent with its role as co-activator, p300 potentiates Pax 8-activated transcription. Furthermore, we provide evidence supporting the formation of a complex between both factors in vivo and in vitro. This interaction involves the amino-terminal and CH3 domains of p300 and the trans-activation domain of Pax 8 at its carboxyl-terminal end. We show that the CH3 domain is crucial for the co-activator role of p300 on the thyroperoxidase gene promoter. In agreement with our finding and with the ability of the adenoviral protein E1A to bind p300, we show that E1A down-regulates Pax 8 activity.
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Affiliation(s)
- R De Leo
- Laboratory of Molecular Pathology and Ultrastructure, Regina Elena Cancer Institute, Via delle Messi d'Oro 156, 00158 Rome, Italy
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Mirabella M, Galluzzi G, Manfredi G, Bertini E, Ricci E, De Leo R, Tonali P, Servidei S. Giant dystrophin deletion associated with congenital cataract and mild muscular dystrophy. Neurology 1998; 51:592-5. [PMID: 9710043 DOI: 10.1212/wnl.51.2.592] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report a patient with a large intragenic dystrophin deletion of exons 17-51 inclusive associated with congenital cataract and mild Becker muscular dystrophy. The cataract was similar to the congenital cataract described in the mdx mouse. The loss of 68% of the rod domain including hinge 2 and 3 regions did not adversely affect the correct localization of the dystrophin and the association with the dystrophin-associated glycoprotein complex. This observation may have implications for minigenes suitable for gene therapy.
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Affiliation(s)
- M Mirabella
- Department of Neurology, Catholic University, Rome, Italy
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Galluzzi G, De Leo R, Morrone A, Servidei S, Vigneti E, Broccolini A, Felicetti L. Asymptomatic dystrophinopathies: analysis of DNA, mRNA and protein. Neuromuscul Disord 1996. [DOI: 10.1016/0960-8966(96)88979-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
We present a 3-D model for the simulation of a realistic clinical situation during magnetic stimulation. The electromagnetic problem is solved by reconstructing the inhomogeneous head tissues from magnetic resonance images and associating relative values of conductivity to each tissue. Application of Maxwell's equations in the integral form leads to an equivalent 3-D electrical network, whose solution gives the current density distribution in the brain. The high spatial resolution and rigorous electromagnetic approach make this model an accurate and useful tool for stimulator design and for estimating the efficiency and safety of this clinical methodology.
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Affiliation(s)
- G Cerri
- Dipartimento di Elettronica ed Automatica, University of Ancona, Italy
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45
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De Leo R, Deidda G, Novelletto A, el-Kalla S, Mathews AR, Felicetti L. Analysis of beta-thalassemia mutations in the United Arab Emirates provides evidence for recurrent origin of the IVSI nt 5 (G-C) mutation. Hum Mutat 1995; 5:327-8. [PMID: 7627187 DOI: 10.1002/humu.1380050409] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Beta-thalassemia mutations were characterized in a sample of 70 patients from United Arab Emirates (U.A.E.), resulting in an enlargement of the spectrum of types found in the country. The complete association between the most common IVS I nt 5 (G-C) mutation and a specific haplotype reveals an independent origin of this mutation in U.A.E.
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Affiliation(s)
- R De Leo
- Institute of Cell Biology, C.N.R., Rome, Italy
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46
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Cucolo AM, Leo RD, Romano P, Dabrowski B, Hinks DG, Radaelli PG. Tunneling spectroscopy into YBa2Cu4O8: Intralayer and interlayer analysis. Phys Rev B Condens Matter 1994; 50:10397-10400. [PMID: 9975137 DOI: 10.1103/physrevb.50.10397] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Mioni F, Danieli GA, Cao A, Cau M, Colonna-Romano S, Covone AE, De Leonardis P, De Leo R, Esposito MG, Felicetti L. A report on 528 intragenic deletions detected in DMD and BMD patients by an Italian collaborative study. Gene Geogr 1994; 8:35-44. [PMID: 7619774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The results of a collaborative study involving about one third of the total DMD and BMD cases living in the Italian territory are reported. The analysis of the breakpoint frequency by intron revealed significant differences among regional groups of DMD patients (for introns 2, 11 and 50 in Sardinia and for introns 9 and 45 in northeastern Italy), whereas no regional differences were observed among regional groups of BMD patients. These differences involve the same Italian regions which previous studies, performed by different markers, identified as "genetically differentiated". The data support the possibility of a differential distribution among populations of some intronic sequences, facilitating the origin of deletion breakpoints within the dystrophin gene.
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Affiliation(s)
- F Mioni
- Department of Biology, University of Padua, Italy
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48
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Abstract
In spite of many clinical and experimental applications, the technique of transcranial magnetic stimulation still presents obscure aspects. This especially concerns safety parameters and the exact characterization of the current induced by a single magnetic pulse. The model proposed consists of an equivalent electric network derived by Maxwell's equations and applied to discretized magnetic resonance imaging of a normal subject. This model allows accurate prediction of current distribution, charge per phase and dissipated energy.
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Affiliation(s)
- R De Leo
- Dipartimento di Elettronica e Automatica, Università di Ancona, Italy
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49
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Antolini R, Cerri G, Cristoforetti L, De Leo R. Absorbed power distributions from single or multiple waveguide applicators during microwave hyperthermia. Phys Med Biol 1986; 31:1005-19. [PMID: 3774873 DOI: 10.1088/0031-9155/31/9/006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A theoretical model has been developed to calculate the power distributions in biological-like tissues in direct contact with waveguide applicators. A numerical solution of the coupled integral equations is performed by means of their transformation into matrix equations by using the method of moments, where the biological tissue and the applicator are described by two independent matrices. The model permits an accurate evaluation of the electric field at the aperture. The application of this method for the evaluation of arrays is also discussed. Power contour plots produced by applicators routinely used in clinics have been computed and compared with experimental results obtained with tissue-equivalent phantoms for three typical bodies: homogeneous, stratified and inhomogeneous.
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50
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De Leo R, D'Erasmo G, Fiore EM, Guarino G, Pantaleo A, Micheletti S. Energy dependence of optical-model parameters for the p+32S system between 15 and 35 MeV. ACTA ACUST UNITED AC 1980. [DOI: 10.1007/bf02816773] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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