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Article ; Online: Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm.

Aguillard, D P / Albahri, T / Allspach, D / Anisenkov, A / Badgley, K / Baeßler, S / Bailey, I / Bailey, L / Baranov, V A / Barlas-Yucel, E / Barrett, T / Barzi, E / Bedeschi, F / Berz, M / Bhattacharya, M / Binney, H P / Bloom, P / Bono, J / Bottalico, E /
Bowcock, T / Braun, S / Bressler, M / Cantatore, G / Carey, R M / Casey, B C K / Cauz, D / Chakraborty, R / Chapelain, A / Chappa, S / Charity, S / Chen, C / Cheng, M / Chislett, R / Chu, Z / Chupp, T E / Claessens, C / Convery, M E / Corrodi, S / Cotrozzi, L / Crnkovic, J D / Dabagov, S / Debevec, P T / Di Falco, S / Di Sciascio, G / Drendel, B / Driutti, A / Duginov, V N / Eads, M / Edmonds, A / Esquivel, J / Farooq, M / Fatemi, R / Ferrari, C / Fertl, M / Fienberg, A T / Fioretti, A / Flay, D / Foster, S B / Friedsam, H / Froemming, N S / Gabbanini, C / Gaines, I / Galati, M D / Ganguly, S / Garcia, A / George, J / Gibbons, L K / Gioiosa, A / Giovanetti, K L / Girotti, P / Gohn, W / Goodenough, L / Gorringe, T / Grange, J / Grant, S / Gray, F / Haciomeroglu, S / Halewood-Leagas, T / Hampai, D / Han, F / Hempstead, J / Hertzog, D W / Hesketh, G / Hess, E / Hibbert, A / Hodge, Z / Hong, K W / Hong, R / Hu, T / Hu, Y / Iacovacci, M / Incagli, M / Kammel, P / Kargiantoulakis, M / Karuza, M / Kaspar, J / Kawall, D / Kelton, L / Keshavarzi, A / Kessler, D S / Khaw, K S / Khechadoorian, Z / Khomutov, N V / Kiburg, B / Kiburg, M / Kim, O / Kinnaird, N / Kraegeloh, E / Krylov, V A / Kuchinskiy, N A / Labe, K R / LaBounty, J / Lancaster, M / Lee, S / Li, B / Li, D / Li, L / Logashenko, I / Lorente Campos, A / Lu, Z / Lucà, A / Lukicov, G / Lusiani, A / Lyon, A L / MacCoy, B / Madrak, R / Makino, K / Mastroianni, S / Miller, J P / Miozzi, S / Mitra, B / Morgan, J P / Morse, W M / Mott, J / Nath, A / Ng, J K / Nguyen, H / Oksuzian, Y / Omarov, Z / Osofsky, R / Park, S / Pauletta, G / Piacentino, G M / Pilato, R N / Pitts, K T / Plaster, B / Počanić, D / Pohlman, N / Polly, C C / Price, J / Quinn, B / Qureshi, M U H / Ramachandran, S / Ramberg, E / Reimann, R / Roberts, B L / Rubin, D L / Santi, L / Schlesier, C / Schreckenberger, A / Semertzidis, Y K / Shemyakin, D / Sorbara, M / Stöckinger, D / Stapleton, J / Still, D / Stoughton, C / Stratakis, D / Swanson, H E / Sweetmore, G / Sweigart, D A / Syphers, M J / Tarazona, D A / Teubner, T / Tewsley-Booth, A E / Tishchenko, V / Tran, N H / Turner, W / Valetov, E / 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

Physical review letters

2023  Volume 131, Issue 16, Page(s) 161802

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 ... ...

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}=116 592 057(25)×10^{-11} (0.21 ppm). Combining this result with our previous result from the 2018 data, we obtain a_{μ}(FNAL)=116 592 055(24)×10^{-11} (0.20 ppm). The new experimental world average is a_{μ}(exp)=116 592 059(22)×10^{-11} (0.19 ppm), which represents a factor of 2 improvement in precision.
Language English
Publishing date 2023-11-05
Publishing country United States
Document type Journal Article
ZDB-ID 208853-8
ISSN 1079-7114 ; 0031-9007
ISSN (online) 1079-7114
ISSN 0031-9007
DOI 10.1103/PhysRevLett.131.161802
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