Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm

被引：176

作者：

Aguillard, D. P. ^{[34
]}

Albahri, T. ^{[31
]}

Allspach, D. ^{[7
]}

Anisenkov, A. ^{[4
,38
]}

Badgley, K. ^{[7
]}

Baessler, S. ^{[36
,39
]}

Bailey, I. ^{[18
,40
]}

Bailey, L. ^{[28
]}

Baranov, V. A. ^{[16
]}

Barlas-Yucel, E. ^{[29
]}

Barrett, T. ^{[6
]}

Barzi, E. ^{[7
]}

Bedeschi, F. ^{[10
]}

Berz, M. ^{[19
]}

Bhattacharya, M. ^{[7
]}

Binney, H. P. ^{[37
]}

Bloom, P. ^{[20
]}

Bono, J. ^{[7
]}

Bottalico, E. ^{[31
]}

Bowcock, T. ^{[31
]}

Braun, S. ^{[37
]}

Bressler, M. ^{[33
]}

Cantatore, G. ^{[12
,41
]}

Carey, R. M. ^{[2
]}

Casey, B. C. K. ^{[7
]}

Cauz, D. ^{[27
,42
]}

Chakraborty, R. ^{[30
]}

Chapelain, A. ^{[6
]}

Chappa, S. ^{[7
]}

Charity, S. ^{[31
]}

Chen, C. ^{[23
,24
]}

Cheng, M. ^{[29
]}

Chislett, R. ^{[28
]}

Chu, Z. ^{[23
,43
,44
]}

Chupp, T. E. ^{[34
]}

Claessens, C. ^{[37
]}

Convery, M. E. ^{[7
]}

Corrodi, S. ^{[1
]}

Cotrozzi, L. ^{[10
,45
]}

Crnkovic, J. D. ^{[7
]}

Dabagov, S. ^{[8
,46
,47
]}

Debevec, P. T. ^{[29
]}

Di Falco, S. ^{[10
]}

Di Sciascio, G. ^{[11
]}

Drendel, B. ^{[7
]}

Driutti, A. ^{[10
,45
]}

Duginov, V. N. ^{[16
]}

Eads, M. ^{[21
]}

Edmonds, A. ^{[2
]}

Esquivel, J. ^{[7
]}

机构：

[1] Argonne Natl Lab, Lemont, IL USA

[2] Boston Univ, Boston, MA 02215 USA

[3] Brookhaven Natl Lab, Upton, NY 11973 USA

[4] Budker Inst Nucl Phys, Novosibirsk, Russia

[5] Inst for Basic Sci Korea, CAPP, Daejeon, South Korea

[6] Cornell Univ, Ithaca, NY USA

[7] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

[8] INFN, Lab Nazl Frascati, Frascati, Italy

[9] INFN, Sez Napoli, Naples, Italy

[10] INFN, Sez Pisa, Pisa, Italy

[11] INFN, Sez Roma Tor Vergata, Rome, Italy

[12] INFN, Sez Trieste, Trieste, Italy

[13] James Madison Univ, Dept Phys & Astron, Harrisonburg, VA 22807 USA

[14] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany

[15] Johannes Gutenberg Univ Mainz, Cluster Excellence PRISMA, Mainz, Germany

[16] Joint Inst Nucl Res, Dubna, Russia

[17] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon, South Korea

[18] Univ Lancaster, Lancaster, England

[19] Michigan State Univ, E Lansing, MI 48824 USA

[20] North Cent Coll, Naperville, IL USA

[21] Northern Illinois Univ, De Kalb, IL USA

[22] Regis Univ, Denver, CO USA

[23] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai, Peoples R China

[24] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai, Peoples R China

[25] Tech Univ Dresden, Inst Kern & Teilchenphys, Dresden, Germany

[26] Univ Molise, Campobasso, Italy

[27] Univ Udine, Udine, Italy

[28] UCL, Dept Phys & Astron, London, England

[29] Univ Illinois, Urbana, IL USA

[30] Univ Kentucky, Lexington, KY USA

[31] Univ Liverpool, Liverpool, Merseyside, England

[32] Univ Manchester, Dept Phys & Astron, Manchester, Lancs, England

[33] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA

[34] Univ Michigan, Ann Arbor, MI 48109 USA

[35] Univ Mississippi, University, MS 38677 USA

[36] Univ Virginia, Charlottesville, VA USA

[37] Univ Washington, Seattle, WA 98195 USA

[38] Novosibirsk State Univ, Novosibirsk, Russia

[39] Oak Ridge Natl Lab, Oak Ridge, TN USA

[40] Cockcroft Inst Accelerator Sci & Technol, Daresbury, England

[41] Univ Trieste, Trieste, Italy

[42] INFN, Grp Collegato Udine, Sez Trieste, Udine, Italy

[43] Shanghai Key Lab Particle Phys & Cosmol, Shanghai, Peoples R China

[44] Key Lab Particle Phys Astrophys & Cosmol MOE, Shanghai, Peoples R China

[45] Univ Pisa, Pisa, Italy

[46] Lebedev Phys Inst, Moscow, Russia

[47] NRNU MEPhI, Moscow, Russia

[48] CNR, Ist Nazl Ott, Pisa, Italy

[49] Alliance Univ, Bangalore, Karnataka, India

[50] INFN, Sez Pisa, Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 131卷 / 16期

基金：

美国国家科学基金会; 英国科学技术设施理事会; 中国国家自然科学基金;

关键词：

Charged particles - Magnetic field effects;

D O I：

10.1103/PhysRevLett.131.161802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a new measurement of the positive muon magnetic anomaly, a, equivalent to (g,- 2)/2, from the Fermilab Muon g - 2 Experiment using data collected in 2019 and 2020. We have analyzed more than 4 times the number of positrons from muon decay than in our previous result from 2018 data. The systematic error is reduced by more than a factor of 2 due to better running conditions, a more stable beam, and improved knowledge of the magnetic field weighted by the muon distribution, w similar to ip, and of the anomalous precession frequency corrected for beam dynamics effects, wa. From the ratio wa/w similar to ip, together with precisely determined external parameters, we determine a, = 116 592 057(25) x 10-11 (0.21 ppm). Combining this result with our previous result from the 2018 data, we obtain a,(FNAL) = 116592055(24) x 10-11 (0.20 ppm). The new experimental world average is a,(exp) = 116 592 059(22) x 10-11 (0.19 ppm), which represents a factor of 2 improvement in precision.

引用

页数：8

共 45 条

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