Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm

Aguillard, D. P.; Albahri, T.; Allspach, D.; Anisenkov, A. V.; Badgley, K.; Baeßler, S.; Bailey, I.; Bailey, Laura; Baranov, V. A.; Barlas-Yucel, E.; Barrett, T.; Barzi, E.; Bedeschi, F.; Berz, Martin; Bhattacharya, Meghna; Binney, H. P.; Bloom, P.; Bono, J.; Bottalico, E.; Bowcock, T. J. V.; Braun, S.; Bressler, M.; Cantatore, G.; Carey, R. M.; Casey, B. C. K.; Cauz, D.; Chakraborty, R.; Chapelain, A.; Chappa, S.; Charity, S.; Cheng, Chen; Cheng, M.-T.; Chislett, R. T.; Chu, Z.; Chupp, T. E.; Claessens, C.; Convery, M. E.; Corrodi, S.; Cotrozzi, L.; Crnkovic, J.; Дабагов, С.Б.; Debevec, P. T.; Falco, S. Di; Sciascio, G. Di; Drendel, B.; Driutti, A.; Duginov, V. N.; Eads, M.; Edmonds, A.; Esquivel, J.; Farooq, M.; Fatemi, R.; Ferrari, C.; Fertl, M.; Fienberg, Aaron; Fioretti, A.; Flay, D.; Foster, S. B.; Friedsam, H.; Froemming, Nathan; Gabbanini, C.; Gaines, I.; Galati, M. D.; Ganguly, S.; Garcı́a, A.; George, J.; Gibbons, L.; Gioiosa, A.; Giovanetti, K. L.; Girotti, P.; Gohn, W.; Goodenough, L.; Gorringe, T. P.; Grange, J.; Grant, S.; Gray, F.; Hacıömeroğlu, Selçuk; Halewood-leagas, T.; Hampai, D.; Han, F.; Hempstead, J.; Hertzog, D. W.; Hesketh, G. G.; Hess, E.; Hibbert, Angela; Hodge, Z.; Hong, K. W.; Hong, R.; Hu, T.; Hu, Y.; Iacovacci, M.; Incagli, M.; Kammel, P.; Kargiantoulakis, M.; Karuza, M.; Kašpar, J.; Kawall, D.; Kelton, L.; Keshavarzi, A.; Kessler, D.; Khaw, Kim Siang; Khechadoorian, Z.; Khomutov, N. V.; Kiburg, B.; Kiburg, M.; Kim, On; Kinnaird, N.; Kraegeloh, E.; Крылов, В. А.; Kuchinskiy, N. A.; Labe, K. R.; LaBounty, J.; Lancaster, M.; Lee, Soohyung; Li, Bingzhi; Li, D.; Li, L.; Logashenko, I.; Campos, A. Lorente; Lu, Z. H.; Lucà, A.; Lukicov, G.; Lusiani, A.; Lyon, A. L.; MacCoy, B.; Madrak, R.; Makino, Kyoko; Mastroianni, S.; Miller, J.; Miozzi, S.; Mitra, B.; Morgan, James P.; Morse, W. M.; Mott, J.; Nath, A.; Ng, J.; Nguyen, H.; Oksuzian, Y.; Omarov, Zhanibek; Osofsky, R.; Park, S.; Pauletta, G.; Piacentino, G. M.; Pilato, Riccardo Nunzio; Pitts, K.; Plaster, B.; Počanić, D.; Pohlman, Nicholas A.; Polly, C. C.; Price, J. D.; Quinn, B.; Qureshi, Mahmood; Ramachandran, S.; Ramberg, E.; Reimann, R.; Roberts, B. L.; Rubin, D. L.; Santi, L.; Schlesier, C.; Schreckenberger, A.; Semertzidis, Yannis K.; Shemyakin, D.N.; Sorbara, M.; Stöckinger, Dominik; Stapleton, J.; Still, D.; Stoughton, Chris; Stratakis, D.; Swanson, H. E.; Sweetmore, G.; Sweigart, D. A.; Syphers, M.; Tarazona, D. A.; Teubner, T.; Tewsley-Booth, A. E.; Tishchenko, V.; Tran, N. H.; Turner, W.; Valetov, Eremey; Vasilkova, D.; Venanzoni, G.; Volnykh, V. P.; Walton, T.; Weisskopf, A.; Welty-Rieger, L.; Winter, P.; Wu, Y.; Yu, B.; Yucel, M.; Zeng, Y.; Zhang, C.

doi:10.1103/physrevlett.131.161802

articlePhysical Review LettersOct 17, 2023HYBRID OA

Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm

DPD. P. Aguillard TAT. Albahri DAD. Allspach AVA. V. Anisenkov KBK. Badgley

University of Michigan · University of Liverpool · +34 more institutions

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Abstract

We present a new measurement of the positive muon magnetic anomaly, a_{μ}≡(g_{μ}-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, ω[over ˜]_{p}^{'}, and of the anomalous precession frequency corrected for beam dynamics effects, ω_{a}. From the ratio ω_{a}/ω[over ˜]_{p}^{'}, together with precisely determined external parameters, we determine a_{μ}=116 592…

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Keywords

Muon
Physics
Fermilab
Anomalous magnetic dipole moment
Precession
Anomaly (physics)
Beam (structure)
Nuclear physics

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