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We show that the anomalous magnetic moment experimental data of muon and electron $(g-2)_{\mu,e}$ can be explained simultaneously in simple extensions of the 3-3-1 models consisting of new heavy neutrinos and a singly charged Higgs boson.…

High Energy Physics - Phenomenology · Physics 2022-08-23 L. T. Hue , Khiem Hong Phan , T. Phong Nguyen , H. N. Long , H. T. Hung

We investigate the possibility of explanation for the muon anomalous magnetic moment $g_\mu-2$ in a left-right model with an inverse seesaw mechanism. We emphasize that the observed deviation from the Standard Model predictions can be…

High Energy Physics - Phenomenology · Physics 2023-03-31 M. Ashry , K. Ezzat , S. Khalil

The recently improved observation of the fine structure constant has led to a negative $2.4\sigma$ anomaly of electron $g-2$. Combined with the long-existing positive $4.2\sigma$ discrepancy of the muon anomalous magnetic moment, it is…

High Energy Physics - Phenomenology · Physics 2021-09-15 Junjie Cao , Yangle He , Jingwei Lian , Di Zhang , Pengxuan Zhu

Since the heavy neutrinos of the inverse seesaw mechanism mix largely with the standard ones, the charged currents formed with them and the muons have the potential of generating robust and positive contribution to the anomalous magnetic…

High Energy Physics - Phenomenology · Physics 2021-11-09 João Paulo Pinheiro , C. A. de S. Pires , Farinaldo S. Queiroz , Yoxara S. Villamizar

We propose a gauged $U(1)_{B-L}$ extended two Higgs doublet model to explain both neutrino mass and lepton anomalous magnetic moments ($g-2$). Neutrino mass is generated via an inverse seesaw mechanism by introducing singlet fermions.…

High Energy Physics - Phenomenology · Physics 2022-04-06 Tanmoy Mondal , Hiroshi Okada

In this work we investigate the muon anomalous magnetic dipole moment $a_\mu$ in a model that extends the Standard Model with a scalar triplet and a lepton triplet. Different from previous studies, we find that there is still viable…

High Energy Physics - Phenomenology · Physics 2025-07-25 Lei Cai , Chengcheng Han , Shi-Ping He , Peiwen Wu

The recent precise measurement of the $W$-mass by the CDF II collaboration is indicative of new physics beyond the Standard Model. On the other hand, a resolution of the longstanding muon $g-2$ anomaly also calls for additional dynamics. In…

High Energy Physics - Phenomenology · Physics 2022-06-24 Nabarun Chakrabarty

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

The very precise measurement of the anomalous magnetic moment of the muon, recently released by the Muon g-2 experiment at Fermilab, can serve to set stringent constraints on new particles. If the observed 4$\sigma$ discrepancy from the…

High Energy Physics - Phenomenology · Physics 2021-12-24 J. C. Criado , A. Djouadi , N. Koivunen , K. Müürsepp , M. Raidal , H. Veermäe

The anomalous magnetic moment (g-2) of the muon was measured with a precision of 0.54 ppm in Experiment 821 at Brookhaven National Laboratory. A difference of 3.2 standard deviations between this experimental value and the prediction of the…

Nuclear Experiment · Physics 2019-08-15 Frederick Gray

The Fermilab Muon $g-2$ experiment measures the muon anomalous magnetic moment with high precision. Together with recent improvements on the theory front, the first results of the experiment confirm the long-standing discrepancy between the…

High Energy Physics - Experiment · Physics 2023-11-22 Marco Incagli

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

The new measurement of the muon's anomalous magnetic moment released by the Muon g-2 experiment at Fermilab sets strong constraints on the properties of many new particles. Using an effective field theory approach to the interactions of…

High Energy Physics - Phenomenology · Physics 2021-07-07 Juan C. Criado , Abdelhak Djouadi , Niko Koivunen , Kristjan Müürsepp , Martti Raidal , Hardi Veermäe

We study the muon anomalous magnetic moment $(g-2)_{\mu}$ in the context of the reduced minimal 3-3-1 model recently proposed in the literature. In particular, its spectrum contains a doubly charged scalar ($H^{\pm \pm}$) and gauge boson…

High Energy Physics - Phenomenology · Physics 2014-06-20 Chris Kelso , P. R. D. Pinheiro , Farinaldo S. Queiroz , William Shepherd

The Muon g-2 Experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will…

Instrumentation and Detectors · Physics 2017-01-04 J. L. Holzbauer

Standard Model contributions to the electron, muon, and tau lepton anomalous magnetic moments, a_l=(g_l-2)/2, are reviewed and updated. The fine structure constant is obtained from the electron g_e-2 and used to refine the QED contribution…

High Energy Physics - Phenomenology · Physics 2009-10-31 Andrzej Czarnecki , William J. Marciano

The Muon g-2 experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will…

High Energy Physics - Experiment · Physics 2018-07-01 J. L. Holzbauer

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

The recent measurement of the muon $g - 2$ anomaly continues to defy a Standard Model explanation, but can be accommodated within the framework of two Higgs doublet models. If one further includes extra fermion content in the form of a…

High Energy Physics - Phenomenology · Physics 2021-09-29 P. M. Ferreira , B. L. Gonçalves , F. R. Joaquim , Marc Sher

Recently, the Muon g-2 experiment at Fermilab has measured the muon anomalous magnetic dipole moment (MDM), $a_\mu=(g_\mu-2)/2$, which reported that the new experimental average increases the tension between experiment and the standard…

High Energy Physics - Phenomenology · Physics 2022-06-01 Hai-Bin Zhang , Chang-Xin Liu , Jin-Lei Yang , Tai-Fu Feng
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