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The spin dynamics in constant electromagnetic fields is described by the Bargmann-Michel-Telegdi equation which can be upgraded with anomalous magnetic and electric dipole moments. The upgraded equation remains self-consistent,…

High Energy Physics - Phenomenology · Physics 2021-01-18 V. G. Baryshevsky , P. I. Porshnev

Current discrepancy between the measurement and the prediction of the muon anomalous magnetic moment can be resolved in the presence of a long-range force created by ordinary atoms acting on the muon spin via axial-vector and/or…

High Energy Physics - Phenomenology · Physics 2023-08-04 Yohei Ema , Ting Gao , Maxim Pospelov

Recent results announced as measurements of the muon's anomalous magnetic moment are in fact measurements of the muon's anomalous spin precession frequency. This precession frequency receives contributions from both the muon's anomalous…

High Energy Physics - Phenomenology · Physics 2009-10-09 Jonathan L. Feng , Konstantin T. Matchev , Yael Shadmi

The presence of a permanent electric dipole moment in an elementary particle implies Charge-Parity symmetry violation and thus could help explain the matter-antimatter asymmetry observed in our universe. Within the context of the Standard…

High Energy Physics - Experiment · Physics 2022-01-25 K. S. Khaw , A. Adelmann , M. Backhaus , N. Berger , M. Daum , M. Giovannozzi , K. Kirch , A. Knecht , A. Papa , C. Petitjean , F. Renga , M. Sakurai , P. Schmidt-Wellenburg

A review of the experimental and theoretical determinations of the anomalous magnetic moment of the muon is given. The anomaly is defined by a=(g-2)/2, where the Land\'e g-factor is the proportionality constant that relates the spin to the…

High Energy Physics - Phenomenology · Physics 2008-11-26 James P. Miller , Eduardo de Rafael , B. Lee Roberts

Violation of chiral symmetry together with change of mass sign allows a linear correction in inverse power of new physics scale to the anomalous magnetic moment of muon. In this light we analyse alternative models showing in particular that…

High Energy Physics - Phenomenology · Physics 2007-05-23 Helder Chavez , Luis Masperi

The theoretical predictions in the standard model (SM) and measurements on the anomalous magnetic dipole moments (MDM) of muon and electron have great precision, hence the MDMs of muon and electron have close relation with the new physics…

High Energy Physics - Phenomenology · Physics 2020-04-10 Jin-Lei Yang , Tai-Fu Feng , Hai-Bin Zhang

The recent measurement of the muon anomalous magnetic dipole moment shows 2.6$\sigma$ deviation of $a_\mu$ from the standard model prediction which can be explained by a chargino-sneutrino loop correction in the supersymmetric models. In…

High Energy Physics - Phenomenology · Physics 2007-05-23 Yasuhiro Daikoku

The recent result from the E821 experiment at BNL on the anomalous magnetic moment of the muon shows a distinct discrepancy with the Standard Model predictions. We calculate the additional correction that the anomalous magnetic moment…

High Energy Physics - Phenomenology · Physics 2009-11-07 Debrupa Chakraverty , Debajyoti Choudhury , Anindya Datta

A recently reported discrepancy between experimental and theoretical values of the muon's g-2 factor is interpreted as due to small violations of the conservation of P and T in the spin-rotation coupling. The experiments place an upper…

General Relativity and Quantum Cosmology · Physics 2009-11-07 G. Papini

Recent experimental results on muon anomalous magnetic dipole moment have shown a $4.2\sigma$ tension with the SM prediction, which has blown a fresh wind into the elementary particle physics community. The problem is believed to be…

High Energy Physics - Phenomenology · Physics 2023-08-09 D. N. Dinh

We examine electron and muon anomalous magnetic dipole moments within a radiative neutrino mass model featuring TeV-scale scalar leptoquarks $S(3,1,-1/3)$ and $R(3,2,1/6)$. We utilize textures with decoupling electron and muon sectors, so…

High Energy Physics - Phenomenology · Physics 2026-02-19 Bayu Dirgantara , J. Julio

We have calculated the composite (pseudo) scalar contributions to the anomalous magnetic moment of muons in models of walking technicolor. By the axial or scale anomaly the light scalars such as techni-dilaton, techni-pions or techni-eta…

High Energy Physics - Phenomenology · Physics 2016-05-24 Deog Ki Hong , Du Hwan Kim

Contributions to the muon anomalous magnetic moment are evaluated in the technicolor model with scalars and topcolor assisted technicolor model. In the technicolor model with scalars, the additional contributions come from the loops of…

High Energy Physics - Phenomenology · Physics 2009-11-07 Z. Xiong , J. M. Yang

In this communication we discuss few topics related with modern experimental data on the physics of light pseudoscalar mesons. It includes the contribution of the pseudoscalar mesons to the muon anomalous magnetic moment (AMM), $g-2$, the…

High Energy Physics - Phenomenology · Physics 2015-05-30 A. E. Dorokhov

The limits on lepton radii and contact interaction scales are used to derive limits on the deviations of lepton anomalous magnetic dipole moments (g-2)/2 from the Standard Model predictions. In the case of quadratic dependence of the…

High Energy Physics - Phenomenology · Physics 2025-06-19 Dimitri Bourilkov

We discuss the recent results on the muon anomalous magnetic moment in the context of new physics models with light scalars. We propose a model in which the one-loop contributions to g-2 of a scalar and a pseudoscalar naturally cancel in…

High Energy Physics - Phenomenology · Physics 2021-09-29 Reuven Balkin , Cedric Delaunay , Michael Geller , Enrique Kajomovitz , Gilad Perez , Yogev Shpilman , Yotam Soreq

We introduce a new model of spin noncommutative space in which noncommutative extension of the coordinate operators are assumed to be chirality dependent. Noncommutative correspondences of classical fields are defined via Weyl ordering, and…

High Energy Physics - Phenomenology · Physics 2019-03-28 Kai Ma

The longstanding discrepancy between the measured and the predicted values of the anomalous magnetic moment of the muon, $a_\mu = (g-2)/2$, is one of the most intriguing potential hints of new physics in particle physics. After a brief…

High Energy Physics - Phenomenology · Physics 2023-01-18 Bogdan Malaescu

We show that muonium spectroscopy in the coming years can reach a precision high enough to determine the anomalous magnetic moment of the muon below one part per million (ppm). Such an independent determination of muon g-2, which is not…

High Energy Physics - Phenomenology · Physics 2022-01-19 Cédric Delaunay , Ben Ohayon , Yotam Soreq
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