正电子的异常磁矩测量至0.20 ppm
摘要：费米实验室的为跑在2019和2020年的新推算的正负子磁素（g-2）测量结果。我们分析的正负子跃迁比2018年的数据多了四倍多。由于更好的跑动条件、更稳定的束流以及对正负子分布进行加权的磁场知识以及修正了束流动力学效应的异常进动频率的改善，系统误差降低了两倍以上。通过比值ωa/ω'p，结合精确确定的外部参数，我们确定了amu=116592057（25）×10-11（0.21 ppm）。将这一结果与我们以前在2018年数据的结果相结合，我们得到了amu（FNAL）=116592055（24）×10-11（0.20 ppm）。新的实验世界平均值为amu（Exp）=116592059（22）×10-11（0.19 ppm），相对于精度提高了一倍。
作者：D. P. Aguillard (33), T. Albahri (30), D. Allspach (7), A. Anisenkov (4 and 37), K. Badgley (7), S. Bae{ss}ler (35 and 38), I. Bailey (17 and 39), L. Bailey (27), V. A. Baranov (15), E. Barlas-Yucel (28), T. Barrett (6), E. Barzi (7), F. Bedeschi (10), M. Berz (18), M. Bhattacharya (7), H. P. Binney (36), P. Bloom (19), J. Bono (7), E. Bottalico (30), T. Bowcock (30), S. Braun (36), M. Bressler (32), G. Cantatore (12 and 40), R. M. Carey (2), B. C. K. Casey (7), D. Cauz (26 and 41), R. Chakraborty (29), A. Chapelain (6), S. Chappa (7), S. Charity (30), C. Chen (23 and 22), M. Cheng (28), R. Chislett (27), Z. Chu (22 and 42 and 43), T. E. Chupp (33), C. Claessens (36), M. E. Convery (7), S. Corrodi (1), L. Cotrozzi (10 and 44), J. D. Crnkovic (7), S. Dabagov (8 and 45), P. T. Debevec (28), S. Di Falco (10), G. Di Sciascio (11), B. Drendel (7), A. Driutti (10 and 44), V. N. Duginov (15), M. Eads (20), A. Edmonds (2), J. Esquivel (7), M. Farooq (33), R. Fatemi (29), C. Ferrari (10 and 46), M. Fertl (14), A. T. Fienberg (36), A. Fioretti (10 and 46), D. Flay (32), S. B. Foster (2), H. Friedsam (7), N. S. Froemming (20), C. Gabbanini (10 and 46), I. Gaines (7), M. D. Galati (10 and 44), S. Ganguly (7), A. Garcia (36), J. George (32 and 47), L. K. Gibbons (6), A. Gioiosa (25 and 48), K. L. Giovanetti (13), P. Girotti (10), W. Gohn (29), L. Goodenough (7), T. Gorringe (29), J. Grange (33), S. Grant (1 and 27), F. Gray (21), S. Haciomeroglu (5 and 49), T. Halewood-Leagas (30), D. Hampai (8), F. Han (29), J. Hempstead (36), D. W. Hertzog (36), G. Hesketh (27), E. Hess (10), A. Hibbert (30), Z. Hodge (36), K. W. Hong (35), R. Hong (29), T. Hu (23 and 22), Y. Hu (22 and 42 and 43), M. Iacovacci (9 and 50), M. Incagli (10), P. Kammel (36), M. Kargiantoulakis (7), M. Karuza (12 and 51), J. Kaspar (36), D. Kawall (32), L. Kelton (29), A. Keshavarzi (31), D. S. Kessler (32), K. S. Khaw (23 and 22), Z. Khechadoorian (6), N. V. Khomutov (15), B. Kiburg (7), M. Kiburg (7 and 19), O. Kim (34), N. Kinnaird (2), E. Kraegeloh (33), V. A. Krylov (15), N. A. Kuchinskiy (15), K. R. Labe (6), J. LaBounty (36), M. Lancaster (31), S. Lee (5), B. Li (22 and 1 and 52), D. Li (22 and 53), L. Li (22 and 42 and 43), I. Logashenko (4 and 37), A. Lorente Campos (29), Z. Lu (22 and 42 and 43), A. Luc`a (7), G. Lukicov (27), A. Lusiani (10 and 54), A. L. Lyon (7), B. MacCoy (36), R. Madrak (7), K. Makino (18), S. Mastroianni (9), J. P. Miller (2), S. Miozzi (11), B. Mitra (34), J. P. Morgan (7), W. M. Morse (3), J. Mott (7 and 2), A. Nath (9 and 50), J. K. Ng (23 and 22), H. Nguyen (7), Y. Oksuzian (1), Z. Omarov (16 and 5), R. Osofsky (36), S. Park (5), G. Pauletta (26 and 41), G. M. Piacentino (25 and 55), R. N. Pilato (30), K. T. Pitts (28 and 56), B. Plaster (29), D. Pov{c}ani''c (35), N. Pohlman (20), C. C. Polly (7), J. Price (30), B. Quinn (34), M. U. H. Qureshi (14), S. Ramachandran (1 and 47), E. Ramberg (7), R. Reimann (14), B. L. Roberts (2), D. L. Rubin (6), L. Santi (26 and 41), C. Schlesier (28 and 57), A. Schreckenberger (7), Y. K. Semertzidis (5 and 16), D. Shemyakin (4 and 37), M. Sorbara (11 and 58), D. St"ockinger (24), J. Stapleton (7), D. Still (7), C. Stoughton (7), D. Stratakis (7), H. E. Swanson (36), G. Sweetmore (31), D. A. Sweigart (6), M. J. Syphers (20), D. A. Tarazona (6 and 30 and 18), T. Teubner (30), A. E. Tewsley-Booth (29 and 33), V. Tishchenko (3), N. H. Tran (2 and 59), W. Turner (30), E. Valetov (18), D. Vasilkova (27 and 30), G. Venanzoni (30 and 48), V. P. Volnykh (15), T. Walton (7), A. Weisskopf (18), L. Welty-Rieger (7), P. Winter (1), Y. Wu (1), B. Yu (34), M. Yucel (7), Y. Zeng (23 and 22), C. Zhang (30) (for the Muon g-2 Collaboration, (1) Argonne National Laboratory, Lemont, Illinois, USA, (2) Boston University, Boston, Massachusetts, USA, (3) Brookhaven National Laboratory, Upton, New York, USA, (4) Budker Institute of Nuclear Physics, Novosibirsk, Russia, (5) Center for Axion and Precision Physics (CAPP) / Institute for Basic Science (IBS), Daejeon, Republic of Korea, (6) Cornell University, Ithaca, New York, USA, (7) Fermi National Accelerator Laboratory, Batavia, Illinois, USA, (8) INFN, Laboratori Nazionali di Frascati, Frascati, Italy, (9) INFN, Sezione di Napoli, Naples, Italy, (10) INFN, Sezione di Pisa, Pisa, Italy, (11) INFN, Sezione di Roma Tor Vergata, Rome, Italy, (12) INFN, Sezione di Trieste, Trieste, Italy, (13) Department of Physics and Astronomy, James Madison University, Harrisonburg, Virginia, USA, (14) Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg University Mainz, Mainz, Germany, (15) Joint Institute for Nuclear Research, Dubna, Russia, (16) Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea, (17) Lancaster University, Lancaster, United Kingdom, (18) Michigan State University, East Lansing, Michigan, USA, (19) North Central College, Naperville, Illinois, USA, (20) Northern Illinois University, DeKalb, Illinois, USA, (21) Regis University, Denver, Colorado, USA, (22) School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China, (23) Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China, (24) Institut f"ur Kern- und Teilchenphysik, Technische Universit"at Dresden, Dresden, Germany, (25) Universit`a del Molise, Campobasso, Italy, (26) Universit`a di Udine, Udine, Italy, (27) Department of Physics and Astronomy, University College London, London, United Kingdom, (28) University of Illinois at Urbana-Champaign, Urbana, Illinois, USA, (29) University of Kentucky, Lexington, Kentucky, USA, (30) University of Liverpool, Liverpool, United Kingdom, (31) Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom, (32) Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA, (33) University of Michigan, Ann Arbor, Michigan, USA, (34) University of Mississippi, University, Mississippi, USA, (35) University of Virginia, Charlottesville, Virginia, USA, (36) University of Washington, Seattle, Washington, USA, (37) Novosibirsk State University, (38) Oak Ridge National Laboratory, (39) The Cockcroft Institute of Accelerator Science and Technology, Daresbury, United Kingdom, (40) Universit`a di Trieste, Trieste, Italy, (41) INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy, (42) Shanghai Key Laboratory for Particle Physics and Cosmology, (43) Key Lab for Particle Physics, Astrophysics and Cosmology (MOE), (44) Universit`a di Pisa, Pisa, Italy, (45) Lebedev Physical Institute and NRNU MEPhI, (46) Istituto Nazionale di Ottica - Consiglio Nazionale delle Ricerche, Pisa, Italy, (47) Alliance University, Bangalore, India, (48) INFN, Sezione di Pisa, Pisa, Italy, (49) Istinye University, Istanbul, urki, (50) Universit`a di Napoli, Naples, Italy, (51) University of Rijeka, Rijeka, Croatia, (52) Research Center for Graph Computing, Zhejiang Lab, Hangzhou, Zhejiang, China, (53) Shenzhen Technology University, Shenzhen, Guangdong, China, (54) Scuola Normale Superiore, Pisa, Italy, (41) INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy, (55) INFN, Sezione di Roma Tor Vergata, Rome, Italy, (56) Virginia Tech, Blacksburg, Virginia, USA, (57) Wellesley College, Wellesley, Massachusetts, USA, (58) Universit`a di Roma Tor Vergata, Rome, Italy, (59) Institute for Interdisciplinary Research in Science and Education (ICISE), Quy Nhon, Binh Dinh, Vietnam)
论文ID：2308.06230
分类：High Energy Physics - Experiment
分类简称：hep-ex
提交时间：2023-08-14