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Ho D, Peng P, Bass C, Collins P, D'Angelo A, Deur A, Fleming J, Hanretty C, Kageya T, Khandaker M, Klein FJ, Klempt E, Laine V, Lowry MM, Lu H, Nepali C, Nikonov VA, O'Connell T, Sandorfi AM, Sarantsev AV, Schumacher RA, Strakovsky II, Švarc A, Walford NK, Wei X, Whisnant CS, Workman RL, Zonta I, Adhikari KP, Adikaram D, Akbar Z, Amaryan MJ, Anefalos Pereira S, Avakian H, Ball J, Bashkanov M, Battaglieri M, Batourine V, Bedlinskiy I, Biselli A, Briscoe WJ, Burkert VD, Carman DS, Celentano A, Charles G, Chetry T, Ciullo G, Clark L, Colaneri L, Cole PL, Contalbrigo M, Crede V, Dashyan N, De Sanctis E, De Vita R, Djalali C, Dupre R, El Alaoui A, El Fassi L, Elouadrhiri L, Eugenio P, Fedotov G, Fegan S, Fersch R, Filippi A, Fradi A, Ghandilyan Y, Gilfoyle GP, Girod FX, Glazier DI, Gleason C, Gohn W, Golovatch E, Gothe RW, Griffioen KA, Guidal M, Guo L, Hakobyan H, Harrison N, Hattawy M, Hicks K, Holtrop M, Hughes SM, Ilieva Y, Ireland DG, Ishkhanov BS, Isupov EL, Jenkins D, Jiang H, Jo HS, Joo K, Joosten S, Keller D, Khachatryan G, Kim A, Kim W, Klein A, Kubarovsky V, Kuleshov SV, Lanza L, Lenisa P, Livingston K, MacGregor IJD, Markov N, McKinnon B, Mineeva T, Mokeev V, Montgomery RA, Movsisyan A, Munoz Camacho C, Murdoch G, Niccolai S, Niculescu G, Osipenko M, Paolone M, Paremuzyan R, Park K, Pasyuk E, Phelps W, Pogorelko O, Price JW, Procureur S, Protopopescu D, Ripani M, Riser D, Ritchie BG, Rizzo A, Rosner G, Sabatié F, Salgado C, Sharabian YG, Skorodumina I, Smith GD, Sober DI, Sokhan D, Sparveris N, Strauch S, Tian Y, Torayev B, Ungaro M, Voskanyan H, Voutier E, Watts DP, Wood MH, Zachariou N, Zhang J, Zhao ZW. Beam-Target Helicity Asymmetry for γ[over →]n[over →]→π^{-}p in the N^{*} Resonance Region. Phys Rev Lett 2017; 118:242002. [PMID: 28665642 DOI: 10.1103/physrevlett.118.242002] [Citation(s) in RCA: 2] [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: 04/07/2017] [Indexed: 06/07/2023]
Abstract
We report the first beam-target double-polarization asymmetries in the γ+n(p)→π^{-}+p(p) reaction spanning the nucleon resonance region from invariant mass W=1500 to 2300 MeV. Circularly polarized photons and longitudinally polarized deuterons in solid hydrogen deuteride (HD) have been used with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the E polarization observable for an effective neutron target. These results have been incorporated into new partial wave analyses and have led to significant revisions for several γnN^{*} resonance photocouplings.
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Affiliation(s)
- D Ho
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - P Peng
- University of Virginia, Charlottesville, Virginia 22903, USA
| | - C Bass
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Collins
- Catholic University of America, Washington, D.C. 20064, USA
| | - A D'Angelo
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- Università di Roma "Tor Vergata" and INFN Sezione di Roma2, 00133 Roma, Italy
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J Fleming
- Edinburgh University, Edinburgh EH9 3FD, United Kingdom
| | - C Hanretty
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- University of Virginia, Charlottesville, Virginia 22903, USA
| | - T Kageya
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Khandaker
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - F J Klein
- The George Washington University, Washington, D.C. 20052, USA
| | - E Klempt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53113 Bonn, Germany
| | - V Laine
- Université Blaise Pascal, Clermont-Ferrand, Aubière Cedex 63178 , France
| | - M M Lowry
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Lu
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
- University of Iowa, Iowa City, Iowa 52242, USA
| | - C Nepali
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - V A Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53113 Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - T O'Connell
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - A M Sandorfi
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A V Sarantsev
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53113 Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - R A Schumacher
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - I I Strakovsky
- The George Washington University, Washington, D.C. 20052, USA
| | - A Švarc
- Rudjer Bošković Institute, Zagreb 10002, Croatia
| | - N K Walford
- Catholic University of America, Washington, D.C. 20064, USA
| | - X Wei
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C S Whisnant
- James Madison University, Harrisonburg, Virginia 22807, USA
| | - R L Workman
- The George Washington University, Washington, D.C. 20052, USA
| | - I Zonta
- Università di Roma "Tor Vergata" and INFN Sezione di Roma2, 00133 Roma, Italy
| | - K P Adhikari
- Old Dominion University, Norfolk, Virginia 23529, USA
- Mississippi State University, Mississippi State, Mississippi 39762, USA
| | - D Adikaram
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - Z Akbar
- Florida State University, Tallahassee, Florida 32306, USA
| | - M J Amaryan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | | | - H Avakian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J Ball
- Irfu/SPhN, CEA, Université Paris-Saclay, Gif-sur-Yvette 91191 , France
| | - M Bashkanov
- Edinburgh University, Edinburgh EH9 3FD, United Kingdom
| | | | - V Batourine
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - I Bedlinskiy
- Institute of Theoretical and Experimental Physics, Moscow 117259, Russia
| | - A Biselli
- Fairfield University, Fairfield, Connecticut 06824, USA
| | - W J Briscoe
- The George Washington University, Washington, D.C. 20052, USA
| | - V D Burkert
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D S Carman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A Celentano
- INFN, Sezione di Genova, Genova 16146, Italy
| | - G Charles
- Old Dominion University, Norfolk, Virginia 23529, USA
- Irfu/SPhN, CEA, Université Paris-Saclay, Gif-sur-Yvette 91191 , France
| | - T Chetry
- Ohio University, Athens, Ohio 45701, USA
| | - G Ciullo
- INFN Sezione di Ferrara and Universita' di Ferrara, Ferrara 44121, Italy
| | - L Clark
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - L Colaneri
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - P L Cole
- Idaho State University, Pocatello, Idaho 83209, USA
| | - M Contalbrigo
- INFN Sezione di Ferrara and Universita' di Ferrara, Ferrara 44121, Italy
| | - V Crede
- Florida State University, Tallahassee, Florida 32306, USA
| | - N Dashyan
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - E De Sanctis
- INFN, Laboratori Nazionali di Frascati, Frascati 00044, Italy
| | - R De Vita
- INFN, Sezione di Genova, Genova 16146, Italy
| | - C Djalali
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - R Dupre
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
- Irfu/SPhN, CEA, Université Paris-Saclay, Gif-sur-Yvette 91191 , France
| | - A El Alaoui
- Argonne National Laboratory, Argonne, Illinois 60439, USA
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - L El Fassi
- Argonne National Laboratory, Argonne, Illinois 60439, USA
- Mississippi State University, Mississippi State, Mississippi 39762, USA
| | - L Elouadrhiri
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Eugenio
- Florida State University, Tallahassee, Florida 32306, USA
| | - G Fedotov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - S Fegan
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - R Fersch
- Christopher Newport University, Newport News, Virginia 23606, USA
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A Filippi
- INFN, Sezione di Torino, Torino 10125, Italy
| | - A Fradi
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
| | - Y Ghandilyan
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - G P Gilfoyle
- University of Richmond, Richmond, Virginia 23173, USA
| | - F X Girod
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D I Glazier
- Edinburgh University, Edinburgh EH9 3FD, United Kingdom
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - C Gleason
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - W Gohn
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - E Golovatch
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - R W Gothe
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - K A Griffioen
- College of William and Mary, Williamsburg, Virginia 23187, USA
| | - M Guidal
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
| | - L Guo
- Florida International University, Miami, Florida 33199, USA
| | - H Hakobyan
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - N Harrison
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - M Hattawy
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - K Hicks
- Ohio University, Athens, Ohio 45701, USA
| | - M Holtrop
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - S M Hughes
- Edinburgh University, Edinburgh EH9 3FD, United Kingdom
| | - Y Ilieva
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - D G Ireland
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - B S Ishkhanov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - E L Isupov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - D Jenkins
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - H Jiang
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - H S Jo
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
| | - K Joo
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - S Joosten
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - D Keller
- University of Virginia, Charlottesville, Virginia 22903, USA
| | | | - A Kim
- University of Connecticut, Storrs, Connecticut 06269, USA
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - W Kim
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - A Klein
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - V Kubarovsky
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S V Kuleshov
- Institute of Theoretical and Experimental Physics, Moscow 117259, Russia
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - L Lanza
- Università di Roma "Tor Vergata" and INFN Sezione di Roma2, 00133 Roma, Italy
| | - P Lenisa
- INFN Sezione di Ferrara and Universita' di Ferrara, Ferrara 44121, Italy
| | - K Livingston
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | | | - N Markov
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - B McKinnon
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - T Mineeva
- University of Connecticut, Storrs, Connecticut 06269, USA
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - V Mokeev
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | | | - A Movsisyan
- INFN Sezione di Ferrara and Universita' di Ferrara, Ferrara 44121, Italy
| | - C Munoz Camacho
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
| | - G Murdoch
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - S Niccolai
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
| | - G Niculescu
- James Madison University, Harrisonburg, Virginia 22807, USA
| | - M Osipenko
- INFN, Sezione di Genova, Genova 16146, Italy
| | - M Paolone
- Temple University, Philadelphia, Pennsylvania 19122, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - R Paremuzyan
- University of New Hampshire, Durham, New Hampshire 03824, USA
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - K Park
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Pasyuk
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W Phelps
- Florida International University, Miami, Florida 33199, USA
| | - O Pogorelko
- Institute of Theoretical and Experimental Physics, Moscow 117259, Russia
| | - J W Price
- California State University, Dominguez Hills, Carson, California 90747, USA
| | - S Procureur
- Irfu/SPhN, CEA, Université Paris-Saclay, Gif-sur-Yvette 91191 , France
| | | | - M Ripani
- INFN, Sezione di Genova, Genova 16146, Italy
| | - D Riser
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - B G Ritchie
- Arizona State University, Tempe, Arizona 85287, USA
| | - A Rizzo
- Università di Roma "Tor Vergata" and INFN Sezione di Roma2, 00133 Roma, Italy
| | - G Rosner
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - F Sabatié
- Irfu/SPhN, CEA, Université Paris-Saclay, Gif-sur-Yvette 91191 , France
| | - C Salgado
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - Y G Sharabian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Iu Skorodumina
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - G D Smith
- Edinburgh University, Edinburgh EH9 3FD, United Kingdom
| | - D I Sober
- Catholic University of America, Washington, D.C. 20064, USA
| | - D Sokhan
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - N Sparveris
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - S Strauch
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - Ye Tian
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - B Torayev
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - M Ungaro
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Voskanyan
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - E Voutier
- Institut de Physique Nucléaire, CNRS-IN2P3 and Université Paris Sud, Orsay 91406, France
| | - D P Watts
- Edinburgh University, Edinburgh EH9 3FD, United Kingdom
| | - M H Wood
- Canisius College, Buffalo, New York 14208, USA
| | - N Zachariou
- Edinburgh University, Edinburgh EH9 3FD, United Kingdom
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - J Zhang
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Z W Zhao
- University of Virginia, Charlottesville, Virginia 22903, USA
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Ahmad QR, Allen RC, Andersen TC, Anglin JD, Bühler G, Barton JC, Beier EW, Bercovitch M, Bigu J, Biller S, Black RA, Blevis I, Boardman RJ, Boger J, Bonvin E, Boulay MG, Bowler MG, Bowles TJ, Brice SJ, Browne MC, Bullard TV, Burritt TH, Cameron K, Cameron J, Chan YD, Chen M, Chen HH, Chen X, Chon MC, Cleveland BT, Clifford ET, Cowan JH, Cowen DF, Cox GA, Dai Y, Dai X, Dalnoki-Veress F, Davidson WF, Doe PJ, Doucas G, Dragowsky MR, Duba CA, Duncan FA, Dunmore J, Earle ED, Elliott SR, Evans HC, Ewan GT, Farine J, Fergani H, Ferraris AP, Ford RJ, Fowler MM, Frame K, Frank ED, Frati W, Germani JV, Gil S, Goldschmidt A, Grant DR, Hahn RL, Hallin AL, Hallman ED, Hamer A, Hamian AA, Haq RU, Hargrove CK, Harvey PJ, Hazama R, Heaton R, Heeger KM, Heintzelman WJ, Heise J, Helmer RL, Hepburn JD, Heron H, Hewett J, Hime A, Howe M, Hykawy JG, Isaac MC, Jagam P, Jelley NA, Jillings C, Jonkmans G, Karn J, Keener PT, Kirch K, Klein JR, Knox AB, Komar RJ, Kouzes R, Kutter T, Kyba CC, Law J, Lawson IT, Lay M, Lee HW, Lesko KT, Leslie JR, Levine I, Locke W, Lowry MM, Luoma S, Lyon J, Majerus S, Mak HB, Marino AD, McCauley N, McDonald AB, McDonald DS, McFarlane K, McGregor G, McLatchie W, Meijer Drees R, Mes H, Mifflin C, Miller GG, Milton G, Moffat BA, Moorhead M, Nally CW, Neubauer MS, Newcomer FM, Ng HS, Noble AJ, Norman EB, Novikov VM, O'Neill M, Okada CE, Ollerhead RW, Omori M, Orrell JL, Oser SM, Poon AW, Radcliffe TJ, Roberge A, Robertson BC, Robertson RG, Rowley JK, Rusu VL, Saettler E, Schaffer KK, Schuelke A, Schwendener MH, Seifert H, Shatkay M, Simpson JJ, Sinclair D, Skensved P, Smith AR, Smith MW, Starinsky N, Steiger TD, Stokstad RG, Storey RS, Sur B, Tafirout R, Tagg N, Tanner NW, Taplin RK, Thorman M, Thornewell P, Trent PT, Tserkovnyak YI, Van Berg R, Van de Water RG, Virtue CJ, Waltham CE, Wang JX, Wark DL, West N, Wilhelmy JB, Wilkerson JF, Wilson J, Wittich P, Wouters JM, Yeh M. Measurement of the rate of nu(e) + d --> p + p + e(-) interactions produced by (8)B solar neutrinos at the Sudbury Neutrino Observatory. Phys Rev Lett 2001; 87:071301. [PMID: 11497878 DOI: 10.1103/physrevlett.87.071301] [Citation(s) in RCA: 169] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2001] [Indexed: 05/23/2023]
Abstract
Solar neutrinos from (8)B decay have been detected at the Sudbury Neutrino Observatory via the charged current (CC) reaction on deuterium and the elastic scattering (ES) of electrons. The flux of nu(e)'s is measured by the CC reaction rate to be straight phi(CC)(nu(e)) = 1.75 +/- 0.07(stat)(+0.12)(-0.11)(syst) +/- 0.05(theor) x 10(6) cm(-2) s(-1). Comparison of straight phi(CC)(nu(e)) to the Super-Kamiokande Collaboration's precision value of the flux inferred from the ES reaction yields a 3.3 sigma difference, assuming the systematic uncertainties are normally distributed, providing evidence of an active non- nu(e) component in the solar flux. The total flux of active 8B neutrinos is determined to be 5.44+/-0.99 x 10(6) cm(-2) s(-1).
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Affiliation(s)
- Q R Ahmad
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
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