Recent results on the muon anomalous magnetic moment from BNL E821

Onderwater, C. J. G.; Brown, H.; Bunce, G.; Carey, Robert M.; Cushman, P.; Danby, G. T.; Debevec, P. T.; Deng, H.; Deninger, W.; Dhawan, S.; Дружинин, В. П.; Duong, L.; Earle, W.; Efstathiadis, E.; Farley, F. J. M.; Fedotovich, G. V.; Girón, S.; Gray, F.; Grosse‐Perdekamp, M.; Großmann, A.; Haeberlen, Ulrich; Hazen, E.; Hertzog, D. W.; Hughes, V. W.; Jungmann, K.; Kawall, D.; Khazin, B. I.; Kindem, J.; Krienen, F.; Kronkvist, I.; Larsen, R.; Lee, Y. Y.; Logashenko, I.B.; McNabb, R.; Meng, W.; Mi, J.; Miller, J.; Morse, W. M.; Orlov, Y.; Özben, C.; Pai, C.; Paley, J. M.; Polly, C. C.; Pretz, J.; Prigl, R.; Putlitz, G. zu; Redin, S. I.; Rind, O.; Roberts, B. L.; Ryskulov, N.M.; Sanders, R.; Sedykh, S.; Semertzidis, Y. K.; Shatunov, Yu. M.; Solodov, E. P.; Steinmetz, Andrew; Sulak, L.; Timmermans, C.; Trofimov, A.; Urner, D.; Warburton, D.; Winn, D.; Yamamoto, A.; Zimmerman, D.

doi:10.1063/1.1345395

Cited by 2 publications

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“…Atomic parity violation experiments have obtained a better fit of their data by taking a value of sin 2 W that is slightly lower than the theoretical prediction at low energy [6]. The Z decay width seems also lower than expected and, finally, a positive anomalous magnetic moment for the muon has been reported recently by the E821 experiment [7]. The Collaboration's measurement is above the Standard Model prediction by 2.7 standard deviations.…”

Section: Cos W Bmentioning

confidence: 91%

“…For example, the E821 collaboration at Brookhaven Alternative Gradient Synchroton found, in a recent analysis, that the experimental value of the anomalous magnetic moment (g ÿ 2) for the negative muon differs from the latest theoretical value (where the hadronic contribution is determined directly by using the data from electron-positron collisions) by 2.8 standard deviations [7].…”

Section: A Muon Anomalous Magnetic Momentmentioning

confidence: 99%

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Implications of a new light gauge boson for neutrino physics

Bœhm

2004

Phys. Rev. D

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We study the impact of light gauge bosons on neutrino physics. We show that they can explain the NuTeV anomaly and also escape the constraints from neutrino experiments if they are very weakly coupled and have a mass of a few GeV. Lighter gauge bosons with stronger couplings could explain both the NuTeV anomaly and the positive anomalous magnetic moment of the muon. However, in the simple model we consider in this paper (say a purely vectorial extra U(1) current), they appear to be in conflict with the precise measurements of \nu-e elastic scattering cross sections. The surprising agreement that we obtain between our naive model and the NuTeV anomaly for a Z' mass of a few GeV may be a coincidence. However, we think it is interesting enough to deserve attention and perhaps a more careful analysis, especially since a new light gauge boson is a very important ingredient for the Light Dark Matter scenario.Comment: 9 page

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Section: Cos W Bmentioning

confidence: 91%

Section: A Muon Anomalous Magnetic Momentmentioning

confidence: 99%