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We review the status of the anomalous magnetic moment of the muon as a precision probe of physics beyond the Standard Model (SM) after the release of the final results from the Fermi National Accelerator Laboratory (FNAL) Muon $g-2$…

High Energy Physics - Phenomenology · Physics 2026-02-19 David W. Hertzog , Martin Hoferichter

We investigate some proposals to solve the electric charge quantization puzzle, which simultaneously explain the recent measured deviation on the muon anomalous magnetic moment. For this we assess extensions of the Electro-Weak Standard…

High Energy Physics - Phenomenology · Physics 2009-11-07 C. A. de S. Pires , P. S. Rodrigues da Silva

A new measurement of the anomalous magnetic moment of the muon, $a_{\mu} \equiv (g-2)/2$, will be performed at the Fermi National Accelerator Laboratory with data taking beginning in 2017. The most recent measurement, performed at…

High Energy Physics - Experiment · Physics 2016-11-16 W. Gohn

The New Muon $(g-2)$ Collaboration at Fermilab has proposed to measure the anomalous magnetic moment of the muon, $a_\mu$, a factor of four better than was done in E821 at the Brookhaven AGS, which obtained $a_\mu = [116 592 089 (63)]…

High Energy Physics - Experiment · Physics 2011-01-05 B. Lee Roberts

Using the $e^+e^-$ pair spectrometer at the 5 MV Van de Graaff accelerator at the Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Krasznahorkay et al. have claimed a 6.8$\sigma$ excess at high $e^+e^-$ opening angles…

High Energy Physics - Phenomenology · Physics 2021-04-08 A. Aleksejevs , S. Barkanova , Yu. G. Kolomensky , B. Sheff

We give a pedagogical introduction to the physics of large extra dimensions. We focus our discussion on minimal extensions of the Standard Model in which gauge fields may propagate in a single, compact extra dimension while the fermions are…

High Energy Physics - Phenomenology · Physics 2017-08-23 Alexander Mück , Apostolos Pilaftsis , Reinhold Rückl

A precision measurement of the muon anomalous magnetic moment, $a_{\mu} = (g-2)/2$, was previously performed at BNL with a result of 2.2 - 2.7 standard deviations above the Standard Model (SM) theoretical calculations. The same experimental…

Accelerator Physics · Physics 2013-01-30 C. Yoshikawa , A. Leveling , N. V. Mokhov , J. Morgan , D. Neuffer , S. Striganov

We analyze the anomalous magnetic moment of the muon (a_{\mu}) in supersymmetric scenarios. First we concentrate on scenarios with universal soft terms. We find that a moderate increase of a_{\mu} can be obtained by lowering the unification…

High Energy Physics - Phenomenology · Physics 2009-11-07 D. G. Cerdeno , E. Gabrielli , S. Khalil , C. Munoz , E. Torrente-Lujan

The determinations of the Cabibbo angle from kaon, pion, $D$ and tau decays disagree with the one from super-allowed beta decays. The resulting $\approx 3\,\sigma$ deficit in first row (but also first column) CKM unitarity is known as the…

High Energy Physics - Phenomenology · Physics 2022-07-07 Andreas Crivellin

The new experiment data of muon g-2 is reported by the workers at Fermilab National Accelerator Laboratory(FNAL). Combined with the previous Brookhaven National Laboratory(BNL) E821 result, the departure from the standard model prediction…

High Energy Physics - Phenomenology · Physics 2022-04-13 Shu-Min Zhao , Lu-Hao Su , Xing-Xing Dong , Tong-Tong Wang , Tai-Fu Feng

All attempts of aeroelastic explanations for the torsional instability of suspension bridges have been somehow criticised and none of them is unanimously accepted by the scientific community. We suggest a new nonlinear model for a…

Dynamical Systems · Mathematics 2015-08-14 Gianni Arioli , Filippo Gazzola

Standard lore uses local anomalies to check the kinematic consistency of gauge theories coupled to chiral fermions, e.g. Standard Models (SM). Based on a systematic cobordism classification, we examine constraints from invertible quantum…

High Energy Physics - Theory · Physics 2020-12-24 Juven Wang

The three-dimensional complexified exteriour bundle $C \otimes \Lambda(R^3)$ is proposed as a geometric interpretation of electroweak doublets of Dirac fermions. The Dirac equation on this bundle allows a staggered discretization on a…

General Physics · Physics 2012-11-09 I. Schmelzer

We study an extended 2 Higgs doublet model (2HDM) in which the Standard Model (SM) Yukawa interactions are forbidden due to a global $U(1)^\prime$ symmetry, but may arise via mixing with vector-like families. In this model, the hierarchical…

High Energy Physics - Phenomenology · Physics 2022-02-08 A. E. Cárcamo Hernández , S. F. King , H. Lee

The muon anomaly $a_\mu=(g_\mu-2)/2$ showing a persisting 3 to 4 $\sigma$ deviation between the SM prediction and the experiment is one of the most promising signals for physics beyond the SM. As is well known, the hadronic uncertainties…

High Energy Physics - Phenomenology · Physics 2019-02-20 Fred Jegerlehner

We present the full one-loop correction to the relation between the running MSbar Yukawa coupling, $\overline h_f(\mu)$, at some renormalization scale, $\mu$, and the pole mass, $m_f$, of a fermion, $f$, in the standard model. Our result…

High Energy Physics - Phenomenology · Physics 2009-10-28 Ralf Hempfling , Bernd A. Kniehl

The measurement by the D0 collaboration of a large like-sign dimuon asymmetry deviates significantly from Standard Model expectations. New Physics may be invoked to account for such a deviation. We analyse how generic extensions of the…

High Energy Physics - Phenomenology · Physics 2014-11-17 Miguel Nebot

In this work manifestations of physics beyond the Standard Model are parameterized with higher-dimension operators and Wilson coefficients using effective field theory. In order to set more stringent experimental limits on the Wilson…

High Energy Physics - Phenomenology · Physics 2024-05-07 Artur E. Semushin , Evgeny Yu. Soldatov

The reported discrepancy of the muon abnormal magnetic moment $a_\mu^{}$ has impacts on the low energy phenomenology. In this paper we calculate the corrections to $a_\mu$ in the standard model extended by the TeV scale seesaw models. We…

High Energy Physics - Phenomenology · Physics 2008-06-06 Wei Chao

We describe the computation of the one-loop muon anomalous magnetic moment and radiative penguin transitions in the minimal and custodially protected Randall-Sundrum model. A fully five-dimensional (5D) framework is employed to match the 5D…

High Energy Physics - Phenomenology · Physics 2015-06-19 M. Beneke , P. Moch , J. Rohrwild
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