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Related papers: Muon and electron $g-2$ and lepton masses in flavo…

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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 propose simple models with a flavor-dependent global $U(1)_\ell$ and a discrete $\mathbb{Z}_2$ symmetries to explain the anomalies in the measured anomalous magnetic dipole moments of muon and electron, $(g-2)_{\mu,e}$, while…

High Energy Physics - Phenomenology · Physics 2020-10-28 Kai-Feng Chen , Cheng-Wei Chiang , Kei Yagyu

We consider a model with multi-charged particles including vector-like fermions and a charged scalar under a local $U(1)_{\mu - \tau}$ symmetry. We search for allowed parameter region explaining muon anomalous magnetic moment (muon $g-2$)…

High Energy Physics - Phenomenology · Physics 2022-08-02 Nilanjana Kumar , Takaaki Nomura , Hiroshi Okada

We study the lepton flavor violation (LFV), the leptonic magnetic moments $(g-2)_{\mu,\,e} $ and the electric dipole moment (EDM) of the electron in the Standard-Model Effective Field Theory with the $\Gamma_N$ modular flavor symmetry. We…

High Energy Physics - Phenomenology · Physics 2022-08-24 Tatsuo Kobayashi , Hajime Otsuka , Morimitsu Tanimoto , Kei Yamamoto

A nonconventional $U(1)_{e-\mu}$ gauge model is proposed to explain the unexpected anomalous magnetic moments of the electron and muon (lepton $g-2$), where only the right-handed electron and muon in the standard model carry the…

High Energy Physics - Phenomenology · Physics 2021-02-24 Chuan-Hung Chen , Takaaki Nomura

The recent experimental status, including the confirmation of the muon $g-2$ anomaly at Fermilab, indicates a Beyond Standard Model (BSM) satisfying the following properties: 1) it enhances the $g-2$ 2) suppresses flavor violations, such as…

High Energy Physics - Phenomenology · Physics 2021-09-01 Wen Yin

We review how the muon anomalous magnetic moment ($g-2$) and the quest for lepton flavor violation are intimately correlated. Indeed the decay $\mu \to e \gamma$ is induced by the same amplitude for different choices of in- and outgoing…

High Energy Physics - Phenomenology · Physics 2017-12-08 Manfred Lindner , Moritz Platscher , Farinaldo S. Queiroz

With the long-standing tension between experiment and Standard-Model (SM) prediction in the anomalous magnetic moment of the muon, $a_\mu=(g-2)_\mu/2$, at the level of 3-4$\sigma$, it is natural to ask if there could be a sizable effect in…

High Energy Physics - Phenomenology · Physics 2018-12-12 Andreas Crivellin , Martin Hoferichter , Philipp Schmidt-Wellenburg

We consider possible beyond-the-Standard-Model (BSM) effects that can accommodate both the long-standing tension in the anomalous magnetic moment of the muon, $a_\mu=(g-2)_\mu/2$, as well as the emerging $2.5\sigma$ deviation in its…

High Energy Physics - Phenomenology · Physics 2019-05-13 Andreas Crivellin , Martin Hoferichter

We show that the discrepancy between the observed value of the muon anomalous moment and the standard model prediction can be explained in the framework of nonlocal theories. We compute the leading order and next to leading order nonlocal…

High Energy Physics - Phenomenology · Physics 2022-06-14 Antonio Capolupo , Gaetano Lambiase , Aniello Quaranta

The confirmation of the discrepancy with the Standard Model predictions in the anomalous magnetic moment by the Muon g-2 experiment at Fermilab points to a low scale of new physics. Flavour symmetries broken at low energies can account for…

High Energy Physics - Phenomenology · Physics 2021-11-10 Lorenzo Calibbi , M. L. López-Ibáñez , Aurora Melis , Oscar Vives

We develop an economical theoretical framework for combined explanations of the flavor physics anomalies involving muons: $(g-2)_\mu$, $R_{K^{(*)}}$, and $b \to s \mu^+ \mu^-$ angular distributions and branching ratios, that was first…

High Energy Physics - Phenomenology · Physics 2022-05-18 Admir Greljo , Yotam Soreq , Peter Stangl , Anders Eller Thomsen , Jure Zupan

The long-standing anomaly in the anomalous magnetic moment of the muon indicates the presence of chirality violating new physics contributions. A possible solution involves scalar leptoquarks with left- and right-handed couplings to the top…

High Energy Physics - Phenomenology · Physics 2017-03-29 Estefania Coluccio Leskow , Andreas Crivellin , Giancarlo D'Ambrosio , Dario Müller

The persistent $a_\mu \equiv (g-2)/2$ anomaly in the muon sector could be due to new physics visible in the electron sector through a sub-ppb measurement of the anomalous magnetic moment of the electron $a_e$. Driven by recent results on…

High Energy Physics - Experiment · Physics 2014-05-27 F. Terranova , G. M. Tino

We have studied the leptonic EDM and the LFV decays relating with the recent data of anomalous magnetic moment of muon, $(g-2)_{\mu}$ in the leptonic dipole operator. We have adopted the successful $\Gamma_2$ modular invariant model by…

High Energy Physics - Phenomenology · Physics 2024-12-18 Takaaki Nomura , Morimitsu Tanimoto , Xing-Yu Wang

The discrepancy between the measured value and the Standard Model prediction of the muon anomalous magnetic moment is one of the most important issues in the particle physics. It is known that introducing a mediator boson X with the $\mu…

High Energy Physics - Phenomenology · Physics 2020-10-28 Syuhei Iguro , Yuji Omura , Michihisa Takeuchi

The muon $g-2$ anomaly is a long-standing discrepancy from its standard model prediction. The recent improved measurement of the fine structure constant makes the electron $g-2$ anomaly very interesting for both sign and magnitude in…

High Energy Physics - Phenomenology · Physics 2019-02-13 Bhaskar Dutta , Yukihiro Mimura

Extensions of the Standard Model featuring excited fermions present an interesting framework that motivates the search for exotic particles at the LHC. Additionally, these extensions offer potential explanations for the muon's anomalous…

High Energy Physics - Phenomenology · Physics 2025-01-27 Muhammad Rehman , Haji Muhammad , Orlando Panella , Mario E. Gomez

There has been a long-standing discrepancy between the experimental measurements of the electron and muon anomalous magnetic moments and their predicted values in the Standard Model. This is particularly relevant in the case of the muon…

High Energy Physics - Phenomenology · Physics 2021-09-15 Pablo Escribano , Jorge Terol-Calvo , Avelino Vicente

In the light of the recent measurement of the muon anmalous magnetic moment $a_\mu$ by the Muon $(g-2)$ Collaboration, we examine the contribution to $a_\mu$ from the exchange of flavor changing scalars. Assuming that the heavier…

High Energy Physics - Phenomenology · Physics 2009-11-07 Sin Kyu Kang , Kang Young Lee
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