1
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Strasser P, Fukumura S, Iwai R, Kanda S, Kawamura S, Kitaguchi M, Nishimura S, Seo S, Shimizu HM, Shimomura K, Tada H, Torii HA. Improved Measurements of Muonic Helium Ground-State Hyperfine Structure at a Near-Zero Magnetic Field. PHYSICAL REVIEW LETTERS 2023; 131:253003. [PMID: 38181354 DOI: 10.1103/physrevlett.131.253003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/12/2023] [Accepted: 11/15/2023] [Indexed: 01/07/2024]
Abstract
Muonic helium atom hyperfine structure (HFS) measurements are a sensitive tool to test the three-body atomic system and bound-state quantum electrodynamics theory, and determine fundamental constants of the negative muon magnetic moment and mass. The world's most intense pulsed negative muon beam at the Muon Science Facility of the Japan Proton Accelerator Research Complex allows improvement of previous measurements and testing further CPT invariance by comparing the magnetic moments and masses of positive and negative muons (second-generation leptons). We report new ground-state HFS measurements of muonic helium-4 atoms at a near-zero magnetic field, performed for the first time using a small admixture of CH_{4} as an electron donor to form neutral muonic helium atoms efficiently. Our analysis gives Δν=4464.980(20) MHz (4.5 ppm), which is more precise than both previous measurements at weak and high fields. The muonium ground-state HFS was also measured under the same conditions to investigate the isotopic effect on the frequency shift due to the gas density dependence in He with CH_{4} admixture and compared with previous studies. Muonium and muonic helium can be regarded as light and heavy hydrogen isotopes with an isotopic mass ratio of 36. No isotopic effect was observed within the current experimental precision.
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Affiliation(s)
- P Strasser
- Muon Science Laboratory, Institute of Materials Structure Science (IMSS), High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- Muon Science Section, Materials and Life Science Division, J-PARC Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Materials Structure Science Program, Graduate Institute for Advanced Studies, SOKENDAI, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - S Fukumura
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - R Iwai
- Muon Science Laboratory, Institute of Materials Structure Science (IMSS), High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - S Kanda
- Muon Science Laboratory, Institute of Materials Structure Science (IMSS), High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- Muon Science Section, Materials and Life Science Division, J-PARC Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Materials Structure Science Program, Graduate Institute for Advanced Studies, SOKENDAI, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - S Kawamura
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - M Kitaguchi
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
- Kobayashi-Maskawa Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
| | - S Nishimura
- Muon Science Laboratory, Institute of Materials Structure Science (IMSS), High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- Muon Science Section, Materials and Life Science Division, J-PARC Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - S Seo
- Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - H M Shimizu
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - K Shimomura
- Muon Science Laboratory, Institute of Materials Structure Science (IMSS), High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- Muon Science Section, Materials and Life Science Division, J-PARC Center, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
- Materials Structure Science Program, Graduate Institute for Advanced Studies, SOKENDAI, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - H Tada
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - H A Torii
- School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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2
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Asai K, Miyao C, Okawa S, Tsumura K. Scalar dark matter with a
μτ
flavored mediator. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.106.035017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Kawamura J, Raby S. W
mass in a model with vectorlike leptons and
U(1)′. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.106.035009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Anisha, Banerjee U, Chakrabortty J, Englert C, Spannowsky M, Stylianou P. Effective connections of
aμ
, Higgs physics, and the collider frontier. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.105.016019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Bonciani R, Broggio A, Di Vita S, Ferroglia A, Mandal MK, Mastrolia P, Mattiazzi L, Primo A, Ronca J, Schubert U, Torres Bobadilla WJ, Tramontano F. Two-Loop Four-Fermion Scattering Amplitude in QED. PHYSICAL REVIEW LETTERS 2022; 128:022002. [PMID: 35089776 DOI: 10.1103/physrevlett.128.022002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 11/20/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
We present the first fully analytic evaluation of the transition amplitude for the scattering of a massless into a massive pair of fermions at the two-loop level in quantum electrodynamics. Our result is an essential ingredient for the determination of the electromagnetic coupling within scattering reactions, beyond the currently known accuracy, which has a crucial impact on the evaluation of the anomalous magnetic moment of the muon. It will allow, in particular, for a precise determination of the leading hadronic contribution to the (g-2)_{μ} in the MUonE experiment at CERN, and therefore can be used to shed light on the current discrepancy between the standard model prediction and the experimental measurement for this important physical observable.
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Affiliation(s)
- R Bonciani
- Dipartimento di Fisica, Università di Roma "La Sapienza" and INFN Sezione di Roma, 00185 Roma, Italy
| | - A Broggio
- Università degli Studi di Milano-Bicocca and INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
| | - S Di Vita
- INFN, Sezione di Milano, Via Celoria 16, 20133 Milano, Italy
- Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
| | - A Ferroglia
- Physics Department, New York City College of Technology, The City University of New York, 300 Jay Street, Brooklyn, New York 11201, USA
- The Graduate School and University Center, The City University of New York, 365 Fifth Avenue, New York, New York 10016, USA
| | - M K Mandal
- INFN, Sezione di Padova, Via Marzolo 8, 35131 Padova, Italy
- Dipartimento di Fisica e Astronomia, Università di Padova, Via Marzolo 8, 35131 Padova, Italy
| | - P Mastrolia
- INFN, Sezione di Padova, Via Marzolo 8, 35131 Padova, Italy
- Dipartimento di Fisica e Astronomia, Università di Padova, Via Marzolo 8, 35131 Padova, Italy
| | - L Mattiazzi
- INFN, Sezione di Padova, Via Marzolo 8, 35131 Padova, Italy
- Dipartimento di Fisica e Astronomia, Università di Padova, Via Marzolo 8, 35131 Padova, Italy
| | - A Primo
- Department of Physics, University of Zürich, CH-8057 Zürich, Switzerland
| | - J Ronca
- Dipartimento di Fisica, Università di Napoli Federico II and INFN, Sezione di Napoli, I-80126 Napoli, Italy
| | - U Schubert
- Department of Physics, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
| | - W J Torres Bobadilla
- Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, 80805 München, Germany
| | - F Tramontano
- Dipartimento di Fisica, Università di Napoli Federico II and INFN, Sezione di Napoli, I-80126 Napoli, Italy
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6
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Cazzaniga C, Odagiu P, Depero E, Molina Bueno L, Andreev YM, Banerjee D, Bernhard J, Burtsev VE, Charitonidis N, Chumakov AG, Cooke D, Crivelli P, Dermenev AV, Donskov SV, Dusaev RR, Enik T, Feshchenko A, Frolov VN, Gardikiotis A, Gerassimov SG, Girod S, Gninenko SN, Hösgen M, Kachanov VA, Karneyeu AE, Kekelidze G, Ketzer B, Kirpichnikov DV, Kirsanov MM, Kolosov VN, Konorov IV, Kovalenko SG, Kramarenko VA, Kravchuk LV, Krasnikov NV, Kuleshov SV, Lyubovitskij VE, Lysan V, Matveev VA, Mikhailov YV, Peshekhonov DV, Polyakov VA, Radics B, Rojas R, Rubbia A, Samoylenko VD, Shchukin D, Sieber H, Tikhomirov VO, Tlisova IV, Tlisov DA, Toropin AN, Trifonov AY, Vasilishin BI, Arenas GV, Volkov PV, Volkov VY, Ulloa P. Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2021; 81:959. [PMID: 34790033 PMCID: PMC8557162 DOI: 10.1140/epjc/s10052-021-09705-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 09/30/2021] [Indexed: 05/28/2023]
Abstract
We report the results of a search for a new vector boson ( A ' ) decaying into two dark matter particles χ 1 χ 2 of different mass. The heavier χ 2 particle subsequently decays to χ 1 and an off-shell Dark Photon A ' ∗ → e + e - . For a sufficiently large mass splitting, this model can explain in terms of new physics the recently confirmed discrepancy observed in the muon anomalous magnetic moment at Fermilab. Remarkably, it also predicts the observed yield of thermal dark matter relic abundance. A detailed Monte-Carlo simulation was used to determine the signal yield and detection efficiency for this channel in the NA64 setup. The results were obtained re-analyzing the previous NA64 searches for an invisible decay A ' → χ χ ¯ and axion-like or pseudo-scalar particles a → γ γ . With this method, we exclude a significant portion of the parameter space justifying the muon g-2 anomaly and being compatible with the observed dark matter relic density for A ' masses from 2 m e up to 390 MeV and mixing parameter ε between 3 × 10 - 5 and 2 × 10 - 2 .
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Affiliation(s)
- C. Cazzaniga
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - P. Odagiu
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Institute of Physics, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - E. Depero
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - L. Molina Bueno
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
- Instituto de Fisica Corpuscular (CSIC/UV), Carrer del Catedrátic José Beltrán Martinez, 2, 46980 Paterna, Valencia Spain
| | | | - D. Banerjee
- CERN, EN-EA, 1211 Geneva 23, Switzerland
- University of Illinois at Urbana Champaign, Urbana, IL 61801-3080 USA
| | | | - V. E. Burtsev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | | | - A. G. Chumakov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - D. Cooke
- UCL Departement of Physics and Astronomy, University College London, Gower St., London, WC1E 6BT UK
| | - P. Crivelli
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - S. V. Donskov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - R. R. Dusaev
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - T. Enik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A. Feshchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V. N. Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A. Gardikiotis
- Physics Department, University of Patras, 265 04 Patras, Greece
| | - S. G. Gerassimov
- Physik Department, Technische Universität München, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - S. Girod
- CERN, EN-EA, 1211 Geneva 23, Switzerland
| | | | - M. Hösgen
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - V. A. Kachanov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | | | - G. Kekelidze
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B. Ketzer
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | | | | | - V. N. Kolosov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - I. V. Konorov
- Physik Department, Technische Universität München, 85748 Garching, Germany
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - S. G. Kovalenko
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
- Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile
| | - V. A. Kramarenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | | | - N. V. Krasnikov
- Institute for Nuclear Research, 117312 Moscow, Russia
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S. V. Kuleshov
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
- Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile
| | - V. E. Lyubovitskij
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Tomsk Polytechnic University, 634050 Tomsk, Russia
- Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR), ICN2019_044, ANID, Santiago, Chile
- Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile
| | - V. Lysan
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V. A. Matveev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - Yu. V. Mikhailov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | | | - V. A. Polyakov
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - B. Radics
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - R. Rojas
- Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile
| | - A. Rubbia
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | - V. D. Samoylenko
- State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’ (IHEP), 142281 Protvino, Russia
| | - D. Shchukin
- P.N. Lebedev Physical Institute, 119 991 Moscow, Russia
| | - H. Sieber
- ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland
| | | | - I. V. Tlisova
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - D. A. Tlisov
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A. N. Toropin
- Institute for Nuclear Research, 117312 Moscow, Russia
| | - A. Yu. Trifonov
- Tomsk State Pedagogical University, 634061 Tomsk, Russia
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | | | | | - P. V. Volkov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - V. Yu. Volkov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - P. Ulloa
- Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile
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7
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Hatton D, Davies C, Galloway B, Koponen J, Lepage G, Lytle A. Charmonium properties from lattice
QCD+QED
: Hyperfine splitting,
J/ψ
leptonic width, charm quark mass, and
aμc. Int J Clin Exp Med 2020. [DOI: 10.1103/physrevd.102.054511] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Farooq M, Chupp T, Grange J, Tewsley-Booth A, Flay D, Kawall D, Sachdeva N, Winter P. Absolute Magnetometry with ^{3}He. PHYSICAL REVIEW LETTERS 2020; 124:223001. [PMID: 32567926 DOI: 10.1103/physrevlett.124.223001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/01/2020] [Indexed: 06/11/2023]
Abstract
We report development of a highly accurate (parts per billion) absolute magnetometer based on ^{3}He NMR. Optical pumping polarizes the spins, long coherence times provide high sensitivity, and the ^{3}He electron shell effectively isolates the nuclear spin providing accuracy limited only by corrections including materials, sample shape, and magnetization. Our magnetometer was used to confirm calibration, to 32 ppb, of the magnetic-field sensors used in recent measurements of the muon magnetic moment anomaly (g_{μ}-2), which differs from the standard model by 2.4 ppm. With independent determination of the magnetic moment of ^{3}He, this work will lead the way to a new absolute magnetometry standard.
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Affiliation(s)
- Midhat Farooq
- Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Timothy Chupp
- Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Joe Grange
- Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Alec Tewsley-Booth
- Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - David Flay
- Physics Department, University of Massachussetts, Amherst, Massachussetts 01003, USA
| | - David Kawall
- Physics Department, University of Massachussetts, Amherst, Massachussetts 01003, USA
| | - Natasha Sachdeva
- Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Peter Winter
- Argonne National Laboratory, Lemont, Illinois 60439, USA
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9
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Hansen MT, Patella A. Finite-Volume Effects in (g-2)_{μ}^{HVP,LO}. PHYSICAL REVIEW LETTERS 2019; 123:172001. [PMID: 31702234 DOI: 10.1103/physrevlett.123.172001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Indexed: 06/10/2023]
Abstract
An analytic expression is derived for the leading-order finite-volume effects arising in lattice QCD calculations of the hadronic-vacuum-polarization contribution to the muon's magnetic moment a_{μ}^{HVP,LO}≡(g-2)_{μ}^{HVP,LO}/2. For calculations in a finite spatial volume with periodicity L, a_{μ}^{HVP,LO}(L) admits a transseries expansion with exponentially suppressed L scaling. Using a Hamiltonian approach, we show that the leading finite-volume correction scales as exp[-M_{π}L] with a prefactor given by the (infinite-volume) Compton amplitude of the pion, integrated with the muon-mass-dependent kernel. To give a complete quantitative expression, we decompose the Compton amplitude into the spacelike pion form factor F_{π}(Q^{2}) and a multiparticle piece. We determine the latter through next-to leading order in chiral perturbation theory and find that it contributes negligibly and through a universal term that depends only on the pion decay constant, with all additional low-energy constants dropping out of the integral.
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Affiliation(s)
- Maxwell T Hansen
- Theoretical Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - Agostino Patella
- Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 6, D-12489 Berlin, Germany
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10
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Abstract
I provide updates for the theoretical predictions of the muon and electron anomalous magnetic moments, for the shift in the fine structure constant α(MZ )and for the weak mixing parameter $ \mathop {\sin }\nolimits^2 \mathop \Theta \nolimits_w (\mathop M\nolimits_Z ) $. Phenomenological results for Euclidean time correlators, the key objects in the lattice QCD approach to hadronic vacuum polarization, are briefly considered. Furthermore,I present a list of isospin breaking and electromagnetic corrections for the lepton moments, which may be used to supplement lattice QCD results obtained in the isospin limit and without the e.m. corrections.
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11
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Izubuchi T, Kuramashi Y, Lehner C, Shintani E. Lattice study of finite volume effect in HVP for muon g-2. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201817506020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We study the finite volume effect of the hadronic vacuum polarization contribution to muon g-2, [see formula in PDF],in lattice QCD by comparison with two different volumes, L4 = (5.4)4 and (8.1)4 fm4, at physical pion. We perform the lattice computation of highly precise vector-vector current correlator with optimized AMA technique on Nf = 2 + 1 PACS gauge configurations in Wilson-clover fermion and stout smeared gluon action at one lattice cut-off, a−1 = 2.33 GeV. We compare two integrals of [see formula in PDF], momentum integral and time-slice summation, on the lattice and numerically show that the different size of finite volume effect appears between two methods. We also discuss the effect of backward-state propagation into the result of [see formula in PDF] with the different boundary condition. Our model-independent study suggest that the lattice computation at physical pion is important for correct estimate of finite volume and other lattice systematics in [see formula in PDF].
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12
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Lighting the way for dark matter. Proc Natl Acad Sci U S A 2017; 114:11557-11560. [DOI: 10.1073/pnas.1716618114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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13
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14
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Anastassopoulos V, Andrianov S, Baartman R, Baessler S, Bai M, Benante J, Berz M, Blaskiewicz M, Bowcock T, Brown K, Casey B, Conte M, Crnkovic JD, D'Imperio N, Fanourakis G, Fedotov A, Fierlinger P, Fischer W, Gaisser MO, Giomataris Y, Grosse-Perdekamp M, Guidoboni G, Hacıömeroğlu S, Hoffstaetter G, Huang H, Incagli M, Ivanov A, Kawall D, Kim YI, King B, Koop IA, Lazarus DM, Lebedev V, Lee MJ, Lee S, Lee YH, Lehrach A, Lenisa P, Levi Sandri P, Luccio AU, Lyapin A, MacKay W, Maier R, Makino K, Malitsky N, Marciano WJ, Meng W, Meot F, Metodiev EM, Miceli L, Moricciani D, Morse WM, Nagaitsev S, Nayak SK, Orlov YF, Ozben CS, Park ST, Pesce A, Petrakou E, Pile P, Podobedov B, Polychronakos V, Pretz J, Ptitsyn V, Ramberg E, Raparia D, Rathmann F, Rescia S, Roser T, Kamal Sayed H, Semertzidis YK, Senichev Y, Sidorin A, Silenko A, Simos N, Stahl A, Stephenson EJ, Ströher H, Syphers MJ, Talman J, Talman RM, Tishchenko V, Touramanis C, Tsoupas N, Venanzoni G, Vetter K, Vlassis S, Won E, Zavattini G, Zelenski A, Zioutas K. A storage ring experiment to detect a proton electric dipole moment. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:115116. [PMID: 27910557 DOI: 10.1063/1.4967465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of 10-29 e ⋅ cm by using polarized "magic" momentum 0.7 GeV/c protons in an all-electric storage ring. Systematic errors relevant to the experiment are discussed and techniques to address them are presented. The measurement is sensitive to new physics beyond the standard model at the scale of 3000 TeV.
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Affiliation(s)
- V Anastassopoulos
- Department of Physics, University of Patras, 26500 Rio-Patras, Greece
| | - S Andrianov
- Faculty of Applied Mathematics and Control Processes, Saint-Petersburg State University, Saint-Petersburg, Russia
| | - R Baartman
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T2A3, Canada
| | - S Baessler
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - M Bai
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - J Benante
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Berz
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - M Blaskiewicz
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Bowcock
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - K Brown
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - B Casey
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - M Conte
- Physics Department and INFN Section of Genoa, 16146 Genoa, Italy
| | - J D Crnkovic
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - N D'Imperio
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Fanourakis
- Institute of Nuclear and Particle Physics NCSR Demokritos, GR-15310 Aghia Paraskevi Athens, Greece
| | - A Fedotov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Fierlinger
- Technical University München, Physikdepartment and Excellence-Cluster "Universe," Garching, Germany
| | - W Fischer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M O Gaisser
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Y Giomataris
- CEA/Saclay, DAPNIA, 91191 Gif-sur-Yvette Cedex, France
| | - M Grosse-Perdekamp
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - G Guidoboni
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - S Hacıömeroğlu
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - G Hoffstaetter
- Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853, USA
| | - H Huang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Incagli
- Physics Department, University and INFN Pisa, Pisa, Italy
| | - A Ivanov
- Faculty of Applied Mathematics and Control Processes, Saint-Petersburg State University, Saint-Petersburg, Russia
| | - D Kawall
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Y I Kim
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - B King
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - I A Koop
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
| | - D M Lazarus
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Lebedev
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - M J Lee
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - S Lee
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Y H Lee
- Korea Research Institute of Standards and Science, Daejeon 34141, South Korea
| | - A Lehrach
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - P Lenisa
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - P Levi Sandri
- Laboratori Nazionali di Frascati, INFN, I-00044 Frascati, Rome, Italy
| | - A U Luccio
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Lyapin
- Royal Holloway, University of London, Egham, Surrey, United Kingdom
| | - W MacKay
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Maier
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - K Makino
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - N Malitsky
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W J Marciano
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Meng
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Meot
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E M Metodiev
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - L Miceli
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - D Moricciani
- Dipartimento di Fisica dell'Univ. di Roma "Tor Vergata" and INFN Sezione di Roma Tor Vergata, Rome, Italy
| | - W M Morse
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Nagaitsev
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - S K Nayak
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y F Orlov
- Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853, USA
| | - C S Ozben
- Istanbul Technical University, Istanbul 34469, Turkey
| | - S T Park
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - A Pesce
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - E Petrakou
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - P Pile
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - B Podobedov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | | | - J Pretz
- RWTH Aachen University and JARA-Fame, III. Physikalisches Institut B, Physikzentrum, 52056 Aachen, Germany
| | - V Ptitsyn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E Ramberg
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - D Raparia
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Rathmann
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - S Rescia
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Roser
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Kamal Sayed
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y K Semertzidis
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Y Senichev
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - A Sidorin
- Joint Institute for Nuclear Research, Dubna, Moscow region, Russia
| | - A Silenko
- Joint Institute for Nuclear Research, Dubna, Moscow region, Russia
| | - N Simos
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Stahl
- RWTH Aachen University and JARA-Fame, III. Physikalisches Institut B, Physikzentrum, 52056 Aachen, Germany
| | - E J Stephenson
- Indiana University Center for Spacetime Symmetries, Bloomington, Indiana 47405, USA
| | - H Ströher
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - M J Syphers
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - J Talman
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R M Talman
- Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853, USA
| | - V Tishchenko
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Touramanis
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - N Tsoupas
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Venanzoni
- Laboratori Nazionali di Frascati, INFN, I-00044 Frascati, Rome, Italy
| | - K Vetter
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Vlassis
- Department of Physics, University of Patras, 26500 Rio-Patras, Greece
| | - E Won
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - G Zavattini
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - A Zelenski
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Zioutas
- Department of Physics, University of Patras, 26500 Rio-Patras, Greece
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Ellis J, Evans JL, Luo F, Nagata N, Olive KA, Sandick P. Beyond the CMSSM without an accelerator: proton decay and direct dark matter detection. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2016; 76:8. [PMID: 26766922 PMCID: PMC4701827 DOI: 10.1140/epjc/s10052-015-3842-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 12/11/2015] [Indexed: 06/05/2023]
Abstract
We consider two potential non-accelerator signatures of generalizations of the well-studied constrained minimal supersymmetric standard model (CMSSM). In one generalization, the universality constraints on soft supersymmetry-breaking parameters are applied at some input scale [Formula: see text]below the grand unification (GUT) scale [Formula: see text], a scenario referred to as 'sub-GUT'. The other generalization we consider is to retain GUT-scale universality for the squark and slepton masses, but to relax universality for the soft supersymmetry-breaking contributions to the masses of the Higgs doublets. As with other CMSSM-like models, the measured Higgs mass requires supersymmetric particle masses near or beyond the TeV scale. Because of these rather heavy sparticle masses, the embedding of these CMSSM-like models in a minimal SU(5) model of grand unification can yield a proton lifetime consistent with current experimental limits, and may be accessible in existing and future proton decay experiments. Another possible signature of these CMSSM-like models is direct detection of supersymmetric dark matter. The direct dark matter scattering rate is typically below the reach of the LUX-ZEPLIN (LZ) experiment if [Formula: see text] is close to [Formula: see text], but it may lie within its reach if [Formula: see text] GeV. Likewise, generalizing the CMSSM to allow non-universal supersymmetry-breaking contributions to the Higgs offers extensive possibilities for models within reach of the LZ experiment that have long proton lifetimes.
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Affiliation(s)
- John Ellis
- />Theoretical Physics and Cosmology Group, Department of Physics, King’s College London, Strand, London, WC2R 2LS UK
- />TH Division, Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - Jason L. Evans
- />William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 USA
| | - Feng Luo
- />TH Division, Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - Natsumi Nagata
- />William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 USA
- />Kavli IPMU (WPI), UTIAS, University of Tokyo, Kashiwa, Chiba 277-8583 Japan
| | - Keith A. Olive
- />William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 USA
| | - Pearl Sandick
- />Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 USA
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Bagnaschi EA, Buchmueller O, Cavanaugh R, Citron M, De Roeck A, Dolan MJ, Ellis JR, Flächer H, Heinemeyer S, Isidori G, Malik S, Martínez Santos D, Olive KA, Sakurai K, de Vries KJ, Weiglein G. Supersymmetric dark matter after LHC run 1. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2015; 75:500. [PMID: 26543400 PMCID: PMC4622175 DOI: 10.1140/epjc/s10052-015-3718-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/05/2015] [Indexed: 06/05/2023]
Abstract
Different mechanisms operate in various regions of the MSSM parameter space to bring the relic density of the lightest neutralino, [Formula: see text], assumed here to be the lightest SUSY particle (LSP) and thus the dark matter (DM) particle, into the range allowed by astrophysics and cosmology. These mechanisms include coannihilation with some nearly degenerate next-to-lightest supersymmetric particle such as the lighter stau [Formula: see text], stop [Formula: see text] or chargino [Formula: see text], resonant annihilation via direct-channel heavy Higgs bosons H / A, the light Higgs boson h or the Z boson, and enhanced annihilation via a larger Higgsino component of the LSP in the focus-point region. These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10. We analyze how future LHC and direct DM searches can complement each other in the exploration of the different DM mechanisms within these scenarios. We find that the [Formula: see text] coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for [Formula: see text] events and long-lived charged particles, whereas their H / A funnel, focus-point and [Formula: see text] coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments. We find that the dominant DM mechanism in our pMSSM10 analysis is [Formula: see text] coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.
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Affiliation(s)
| | - O. Buchmueller
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | - R. Cavanaugh
- />Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 USA
- />Physics Department, University of Illinois at Chicago, Chicago, IL 60607-7059 USA
| | - M. Citron
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | - A. De Roeck
- />Physics Department, CERN, 1211 Geneva 23, Switzerland
- />Antwerp University, 2610 Wilrijk, Belgium
| | - M. J. Dolan
- />Theory Group, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025-7090 USA
- />ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Parkville, 3010 Australia
| | - J. R. Ellis
- />Physics Department, CERN, 1211 Geneva 23, Switzerland
- />Theoretical Particle Physics and Cosmology Group, Department of Physics, King’s College London, London, WC2R 2LS UK
| | - H. Flächer
- />H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL UK
| | - S. Heinemeyer
- />Instituto de Física de Cantabria (CSIC-UC), 39005 Santander, Spain
| | - G. Isidori
- />Physik-Institut, Universität Zürich, 8057 Zürich, Switzerland
| | - S. Malik
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | - D. Martínez Santos
- />Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - K. A. Olive
- />William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 USA
| | - K. Sakurai
- />Theoretical Particle Physics and Cosmology Group, Department of Physics, King’s College London, London, WC2R 2LS UK
| | - K. J. de Vries
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | - G. Weiglein
- />DESY, Notkestraße 85, 22607 Hamburg, Germany
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de Vries KJ, Bagnaschi EA, Buchmueller O, Cavanaugh R, Citron M, De Roeck A, Dolan MJ, Ellis JR, Flächer H, Heinemeyer S, Isidori G, Malik S, Marrouche J, Santos DM, Olive KA, Sakurai K, Weiglein G. The pMSSM10 after LHC run 1. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2015; 75:422. [PMID: 26543402 PMCID: PMC4623934 DOI: 10.1140/epjc/s10052-015-3599-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 08/04/2015] [Indexed: 06/04/2023]
Abstract
We present a frequentist analysis of the parameter space of the pMSSM10, in which the following ten soft SUSY-breaking parameters are specified independently at the mean scalar top mass scale [Formula: see text]: the gaugino masses [Formula: see text], the first-and second-generation squark masses [Formula: see text], the third-generation squark mass [Formula: see text], a common slepton mass [Formula: see text] and a common trilinear mixing parameter A, as well as the Higgs mixing parameter [Formula: see text], the pseudoscalar Higgs mass [Formula: see text] and [Formula: see text], the ratio of the two Higgs vacuum expectation values. We use the MultiNest sampling algorithm with [Formula: see text]1.2 [Formula: see text] points to sample the pMSSM10 parameter space. A dedicated study shows that the sensitivities to strongly interacting sparticle masses of ATLAS and CMS searches for jets, leptons [Formula: see text][Formula: see text] signals depend only weakly on many of the other pMSSM10 parameters. With the aid of the Atom and Scorpion codes, we also implement the LHC searches for electroweakly interacting sparticles and light stops, so as to confront the pMSSM10 parameter space with all relevant SUSY searches. In addition, our analysis includes Higgs mass and rate measurements using the HiggsSignals code, SUSY Higgs exclusion bounds, the measurements of [Formula: see text] by LHCb and CMS, other B-physics observables, electroweak precision observables, the cold dark matter density and the XENON100 and LUX searches for spin-independent dark matter scattering, assuming that the cold dark matter is mainly provided by the lightest neutralino [Formula: see text]. We show that the pMSSM10 is able to provide a supersymmetric interpretation of [Formula: see text], unlike the CMSSM, NUHM1 and NUHM2. As a result, we find (omitting Higgs rates) that the minimum [Formula: see text] with 18 degrees of freedom (d.o.f.) in the pMSSM10, corresponding to a [Formula: see text] probability of 30.8 %, to be compared with [Formula: see text] in the CMSSM (NUHM1) (NUHM2). We display the one-dimensional likelihood functions for sparticle masses, and we show that they may be significantly lighter in the pMSSM10 than in the other models, e.g., the gluino may be as light as [Formula: see text]1250 [Formula: see text] at the 68 % CL, and squarks, stops, electroweak gauginos and sleptons may be much lighter than in the CMSSM, NUHM1 and NUHM2. We discuss the discovery potential of future LHC runs, [Formula: see text] colliders and direct detection experiments.
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Affiliation(s)
- K. J. de Vries
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | | | - O. Buchmueller
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | - R. Cavanaugh
- />Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 USA
- />Physics Department, University of Illinois at Chicago, Chicago, IL 60607-7059 USA
| | - M. Citron
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | - A. De Roeck
- />Physics Department, CERN, 1211 Geneva 23, Switzerland
- />Antwerp University, 2610 Wilrijk, Belgium
| | - M. J. Dolan
- />Theory Group, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025-7090 USA
- />ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Melbourne, 3010 Australia
| | - J. R. Ellis
- />Physics Department, CERN, 1211 Geneva 23, Switzerland
- />Theoretical Particle Physics and Cosmology Group, Department of Physics, King’s College London, London, WC2R 2LS UK
| | - H. Flächer
- />H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL UK
| | - S. Heinemeyer
- />Instituto de Física de Cantabria (CSIC-UC), 39005 Santander, Spain
| | - G. Isidori
- />Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - S. Malik
- />High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK
| | - J. Marrouche
- />Physics Department, CERN, 1211 Geneva 23, Switzerland
| | - D. Martínez Santos
- />Nikhef National Institute for Subatomic Physics, VU University Amsterdam, Amsterdam, The Netherlands
- />Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - K. A. Olive
- />William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 USA
| | - K. Sakurai
- />Theoretical Particle Physics and Cosmology Group, Department of Physics, King’s College London, London, WC2R 2LS UK
| | - G. Weiglein
- />DESY, Notkestraße 85, 22607 Hamburg, Germany
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Calibbi L, Paradisi P, Ziegler R. Lepton flavor violation in flavored gauge mediation. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2014; 74:3211. [PMID: 25983641 PMCID: PMC4423892 DOI: 10.1140/epjc/s10052-014-3211-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 12/01/2014] [Indexed: 06/04/2023]
Abstract
We study the anatomy and phenomenology of lepton flavor violation (LFV) in the context of flavored gauge mediation (FGM). Within FGM, the messenger sector couples directly to the MSSM matter fields with couplings controlled by the same dynamics that explains the hierarchies in the SM Yukawas. Although the pattern of flavor violation depends on the particular underlying flavor model, FGM provides a built-in flavor suppression similar to wave function renormalization or SUSY partial compositeness. Moreover, in contrast to these models, there is an additional suppression of left-right flavor transitions by third-generation Yukawas that in particular provides an extra protection against flavor-blind phases. We exploit the consequences of this setup for lepton flavor phenomenology, assuming that the new couplings are controlled by simple [Formula: see text] flavor models that have been proposed to accommodate large neutrino mixing angles. Remarkably, it turns out that in the context of FGM these models can pass the impressive constraints from LFV processes and leptonic electric dipole moments (EDMs) even for light superpartners, therefore offering the possibility of resolving the longstanding muon [Formula: see text] anomaly.
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Affiliation(s)
- Lorenzo Calibbi
- Service de Physique Théorique, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Paride Paradisi
- Dipartimento di Fisica e Astronomia, Universitá di Padova, Via Marzolo 8, 35131 Padua, Italy
- INFN Sezione di Padova, Via Marzolo 8, 35131 Padua, Italy
- SISSA, Via Bonomea 265, 34136 Trieste, Italy
| | - Robert Ziegler
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7589, LPTHE, 75005 Paris, France
- CNRS, UMR 7589, LPTHE, 75005 Paris, France
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Bufalo R, Pimentel B, Soto D. Causal approach for the electron-positron scattering in generalized quantum electrodynamics. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.90.085012] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kim JE. Inverted effective supersymmetry with combinedZ′and gravity mediation, and muon anomalous magnetic moment. Int J Clin Exp Med 2013. [DOI: 10.1103/physrevd.87.015004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Aoyama T, Hayakawa M, Kinoshita T, Nio M. Complete tenth-order QED contribution to the muon g-2. PHYSICAL REVIEW LETTERS 2012; 109:111808. [PMID: 23005619 DOI: 10.1103/physrevlett.109.111808] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Indexed: 06/01/2023]
Abstract
We report the result of our calculation of the complete tenth-order QED terms of the muon g-2. Our result is a(μ)((10))=753.29 (1.04) in units of (α/π)(5), which is about 4.5 s.d. larger than the leading-logarithmic estimate 663(20). We also improve the precision of the eighth-order QED term of a(μ), obtaining a(μ)((8))=130.8794 (63) in units of (α/π)(4). The new QED contribution is a(μ)(QED)=116,584,718,951 (80)×10(-14), which does not resolve the existing discrepancy between the standard-model prediction and measurement of a(μ).
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Affiliation(s)
- Tatsumi Aoyama
- Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya, 464-8602, Japan
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Younkin JE, Martin SP. Nonuniversal gaugino masses, the supersymmetric little hierarchy problem, and dark matter. Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.85.055028] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li T, Maxin JA, Nanopoulos DV, Walker JW. Unification of dynamical determination and bare minimal phenomenological constraints in no-scaleF−SU(5). Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.85.056007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ellis J, Fields BD, Luo F, Olive KA, Spanos VC. Enhanced cosmologicalLi6abundance as a potential signature of residual dark matter annihilations. Int J Clin Exp Med 2011. [DOI: 10.1103/physrevd.84.123502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hoecker A. The hadronic contribution to the muon anomalous magnetic moment and to the running electromagnetic fine structure constant at — overview and latest results. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.nuclphysbps.2011.06.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Wolfe CE, Maltman K. Consequences of theBABARand KLOEe+e−→π+π−data for the determination of model-dependentρ-ωmixing effects inΠρω(mρ2)and(g−2)μ. Int J Clin Exp Med 2011. [DOI: 10.1103/physrevd.83.077301] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dutta B, Mimura Y, Santoso Y. CPviolating lepton asymmetry fromBdecays in supersymmetric grand unified theories. Int J Clin Exp Med 2010. [DOI: 10.1103/physrevd.82.055017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Nath P, Nelson B, Davoudiasl H, Dutta B, Feldman D, Liu Z, Han T, Langacker P, Mohapatra R, Valle J, Pilaftsis A, Zerwas D, AbdusSalam S, Adam-Bourdarios C, Aguilar-Saavedra J, Allanach B, Altunkaynak B, Anchordoqui LA, Baer H, Bajc B, Buchmueller O, Carena M, Cavanaugh R, Chang S, Choi K, Csáki C, Dawson S, de Campos F, De Roeck A, Dührssen M, Éboli O, Ellis J, Flächer H, Goldberg H, Grimus W, Haisch U, Heinemeyer S, Hirsch M, Holmes M, Ibrahim T, Isidori G, Kane G, Kong K, Lafaye R, Landsberg G, Lavoura L, Lee JS, Lee SJ, Lisanti M, Lüst D, Magro M, Mahbubani R, Malinsky M, Maltoni F, Morisi S, Mühlleitner M, Mukhopadhyaya B, Neubert M, Olive K, Perez G, Pérez PF, Plehn T, Pontón E, Porod W, Quevedo F, Rauch M, Restrepo D, Rizzo T, Romão J, Ronga F, Santiago J, Schechter J, Senjanović G, Shao J, Spira M, Stieberger S, Sullivan Z, Tait TM, Tata X, Taylor T, Toharia M, Wacker J, Wagner C, Wang LT, Weiglein G, Zeppenfeld D, Zurek K. The Hunt for New Physics at the Large Hadron Collider. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.nuclphysbps.2010.03.001] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Patiño L, Sánchez GT. Hadron production in electron-positron annihilation computed from the gauge-gravity correspondence. Int J Clin Exp Med 2009. [DOI: 10.1103/physrevd.80.126019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dutta B, Mimura Y, Santoso Y. Correlation between direct dark matter detection andBr(Bs→μμ)with a large phase ofBs−B¯smixing. Int J Clin Exp Med 2009. [DOI: 10.1103/physrevd.80.095005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Godbole RM, Guchait M, Roy DP. Using tau polarization to probe the stau co-annihilation region of the minimal supergravity model at the LHC. Int J Clin Exp Med 2009. [DOI: 10.1103/physrevd.79.095015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dutta B, Gurrola A, Kamon T, Krislock A, Lahanas AB, Mavromatos NE, Nanopoulos DV. Supersymmetry signals of supercritical string cosmology at the Large Hadron Collider. Int J Clin Exp Med 2009. [DOI: 10.1103/physrevd.79.055002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Arnowitt R, Dutta B, Gurrola A, Kamon T, Krislock A, Toback D. Determining the dark matter relic density in the minimal supergravity stau-neutralino coannihilation region at the Large Hadron Collider. PHYSICAL REVIEW LETTERS 2008; 100:231802. [PMID: 18643484 DOI: 10.1103/physrevlett.100.231802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2008] [Indexed: 05/26/2023]
Abstract
We examine the stau-neutralino coannihilation (CA) mechanism of the early Universe. We use the minimal supergravity (mSUGRA) model and show that from measurements at the CERN Large Hadron Collider one can predict the dark matter relic density with an uncertainty of 6% with 30 fb(-1) of data, which is comparable to the direct measurement by the Wilkinson Microwave Anisotropy Probe. This is done by measuring four mSUGRA parameters m(0), m(1/2), A(0), and tanbeta without requiring direct measurements of the top squark and bottom squark masses. We also provide precision measurements of the gaugino, squark, and lighter stau masses in this CA region without assuming gaugino universality.
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Affiliation(s)
- Richard Arnowitt
- Department of Physics, Texas A&M University, College Station, TX 77843-4242, USA
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Bennett GW, Bousquet B, Brown HN, Bunce G, Carey RM, Cushman P, Danby GT, Debevec PT, Deile M, Deng H, Deninger W, Dhawan SK, Druzhinin VP, Duong L, Efstathiadis E, Farley FJM, Fedotovich GV, Giron S, Gray FE, Grigoriev D, Grosse-Perdekamp M, Grossmann A, Hare MF, Hertzog DW, Huang X, Hughes VW, Iwasaki M, Jungmann K, Kawall D, Kawamura M, Khazin BI, Kindem J, Krienen F, Kronkvist I, Lam A, Larsen R, Lee YY, Logashenko I, McNabb R, Meng W, Mi J, Miller JP, Mizumachi Y, Morse WM, Nikas D, Onderwater CJG, Orlov Y, Ozben CS, Paley JM, Peng Q, Polly CC, Pretz J, Prigl R, zu Putlitz G, Qian T, Redin SI, Rind O, Roberts BL, Ryskulov N, Sedykh S, Semertzidis YK, Shagin P, Shatunov YM, Sichtermann EP, Solodov E, Sossong M, Steinmetz A, Sulak LR, Timmermans C, Trofimov A, Urner D, von Walter P, Warburton D, Winn D, Yamamoto A, Zimmerman D. Search for Lorentz and CPT violation effects in Muon spin precession. PHYSICAL REVIEW LETTERS 2008; 100:091602. [PMID: 18352695 DOI: 10.1103/physrevlett.100.091602] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2007] [Indexed: 05/26/2023]
Abstract
The spin precession frequency of muons stored in the (g-2) storage ring has been analyzed for evidence of Lorentz and CPT violation. Two Lorentz and CPT violation signatures were searched for a nonzero delta omega a(=omega a mu+ - omega a mu-) and a sidereal variation of omega a mu+/-). No significant effect is found, and the following limits on the standard-model extension parameters are obtained: bZ = -(1.0+/-1.1) x 10(-23) GeV; (m mu dZ0 + HXY)=(1.8+/-6.0) x 10(-23) GeV; and the 95% confidence level limits b perpendicular mu+ <1.4 x 10(-24) GeV and b perpendicular mu- <2.6 x 10(-24) GeV.
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Affiliation(s)
- G W Bennett
- Brookhaven National Laboratory, Upton, NY 11973, USA
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Miller JP, de Rafael E, Lee Roberts B. Muon ( g- 2): experiment and theory. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2007; 70:R03. [PMID: 34996300 DOI: 10.1088/0034-4885/70/5/r03] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Indexed: 06/14/2023]
Abstract
A review of the experimental and theoretical determinations of the anomalous magnetic moment of the muon is given. The anomaly is defined bya= (g- 2)/2, where the Landég-factor is the proportionality constant that relates the spin to the magnetic moment. For the muon, as well as for the electron and tauon, the anomalyadiffers slightly from zero (of the order 10-3) because of radiative corrections. In the Standard Model, contributions to the anomaly come from virtual 'loops' containing photons and the known massive particles. The relative contribution from heavy particles scales as the square of the lepton mass over the heavy mass, leading to small differences in the anomaly fore, μ and τ. If there are heavy new particles outside the Standard Model which couple to photons and/or leptons, the relative effect on the muon anomaly will be ∼ (mμ/me)2≈ 43 × 103larger compared with the electron anomaly. Because both the theoretical and experimental values of the muon anomaly are determined to high precision, it is an excellent place to search for the effects of new physics or to constrain speculative extensions to the Standard Model. Details of the current theoretical evaluation and of the series of experiments that culminates with E821 at the Brookhaven National Laboratory, are given. At present the theoretical and the experimental values are known with a similar relative precision of 0.5 ppm. There is, however, a 3.4 standard-deviation difference between the two, strongly suggesting the need for continued experimental and theoretical study.
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Affiliation(s)
- James P Miller
- Department of Physics, Boston University, Boston, MA 02215, USA
- Author to whom any correspondence should be addressed
| | - Eduardo de Rafael
- Centre de Physique Théorique, CNRS-Luminy, Case 907, F-13288 Marseille Cedex 9, France
| | - B Lee Roberts
- Department of Physics, Boston University, Boston, MA 02215, USA
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Pape L, Treille D. Supersymmetry facing experiment: much ado (already) about nothing (yet). REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2006; 69:R01. [PMID: 34996301 DOI: 10.1088/0034-4885/69/11/r01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2006] [Indexed: 06/14/2023]
Abstract
This report emphasizes the comparison between supersymmetric models and experiments. A minimal theoretical introduction is included as a guide to the interpretation of results. The existing constraints from low energy measurements, accelerator searches (LEP, Tevatron and HERA) and non-accelerator searches for neutralinos are presented. Prospects for upgrades of these facilities and for the LHC and linear collider are summarized. Most discussions are made in the framework of the minimal supersymmetric standard model inspired by supergravity (MSUGRA). But alternatives such as gauge mediated supersymmetry breaking (GMSB), anomaly mediated supersymmetry breaking (AMSB), models with R-parity violation and even alternatives to supersymmetry are also briefly considered.
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Affiliation(s)
- Luc Pape
- Institute of Particle Physics, ETH, 8093 Zurich, Switzerland
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Erler J, Sánchez GT. Upper bound on the hadronic light-by-light contribution to the muon g - 2. PHYSICAL REVIEW LETTERS 2006; 97:161801. [PMID: 17155382 DOI: 10.1103/physrevlett.97.161801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2006] [Indexed: 05/12/2023]
Abstract
There are indications that hadronic loops in some electroweak observables are almost saturated by parton level effects. Taking this as the hypothesis for this work, we propose a genuine parton level estimate of the hadronic light-by-light contribution to the anomalous magnetic moment of the muon, a(LBL)/(mu)(had). Our quark mass definitions and values are motivated in detail, and the simplicity of our approach allows for a transparent error estimate. For infinitely heavy quarks our treatment is exact, while for asymptotically small quark masses a(LBL)/(mu)(had) is overestimated. Interpolating, this suggests quoting an upper bound. We obtain a(LBL)/(mu)(had)<1.59x10;{-9} (95% C.L.).
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Affiliation(s)
- Jens Erler
- Instituto de Física, Universidad Nacional Autónoma de México, Mexico DF, Mexico
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