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Related papers: Anomalies in $B$ Decays and Muon $g-2$ from Dark L…

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We discuss two models which are part of a class providing a common explanation for lepton flavor universality violation in $b \to s l^+ l^- $ decays, the dark matter (DM) problem and the muon $(g-2)$ anomaly. The $B$ meson decays and the…

High Energy Physics - Phenomenology · Physics 2022-12-14 Rodrigo Capucha , Da Huang , Tomás Lopes , Rui Santos

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

In the light of the recent result of the Muon g-2 experiment and the update on the test of lepton flavour universality $R_K$ published by the LHCb collaboration, we systematically build and discuss a set of models with minimal field content…

High Energy Physics - Phenomenology · Physics 2021-08-11 Giorgio Arcadi , Lorenzo Calibbi , Marco Fedele , Federico Mescia

We study an extension of the Standard Model that addresses the hints of lepton flavour universality violation observed in $B\to K^{(*)} l^+l^-$ decays at LHCb, while providing a viable candidate for dark matter. The model incorporates two…

High Energy Physics - Phenomenology · Physics 2019-07-24 D. G. Cerdeno , A. Cheek , P. Martin-Ramiro , J. M. Moreno

The longstanding muon $(g-2)$ anomaly, as well as the persistent hints of lepton flavor universality violation in $B$-meson decays, could be signaling new physics beyond the Standard Model (SM). A minimal $R$-parity-violating supersymmetric…

High Energy Physics - Phenomenology · Physics 2023-06-21 Yoav Afik , P. S. Bhupal Dev , Amarjit Soni , Fang Xu

We present a minimal extension of the Standard Model that can simultaneously account for the anomalies in semi-leptonic B meson decays and the muon g-2, give large CP violation in charm decays (up to the value recently measured by LHCb),…

High Energy Physics - Phenomenology · Physics 2020-10-15 Lorenzo Calibbi , Tianjun Li , Ying Li , Bin Zhu

Motivated by the result of the Muon g-2 experiment and the long-standing anomalies in semileptonic $B$ meson decays, we systematically build a class of minimal models that can address both experimental results thanks to the contributions of…

High Energy Physics - Phenomenology · Physics 2021-10-27 Giorgio Arcadi , Lorenzo Calibbi , Marco Fedele , Federico Mescia

We propose a new class of $U(1)_{\mu-\tau}$ gauged model that can explain recent flavor anomalies such as muon $g-2$, $b\to s\mu^+ \mu^-$, as well as include a scalar dark matter candidate while satisfying all the phenomenological…

High Energy Physics - Phenomenology · Physics 2022-06-01 P. Ko , Takaaki Nomura , Hiroshi Okada

The lepton sector of the Standard Model is at present haunted by several intriguing anomalies, including an emerging pattern of deviations in $b \to s \ell \ell$ processes, with hints of lepton flavor universality violation, and a…

High Energy Physics - Phenomenology · Physics 2023-03-08 Ricardo Cepedello , Pablo Escribano , Avelino Vicente

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

We study the recently found anomalies in $B$-meson decays within a scenario with a warped extra dimension where the Standard Model fermions are propagating in the bulk. The anomalies are then interpreted as the result of the exchange of…

High Energy Physics - Phenomenology · Physics 2017-09-18 Eugenio Megias , Mariano Quiros , Lindber Salas

In recent years, significant experimental indications that point towards Lepton Flavour Universality violating effects in B-decays, involving $b \to c \tau \nu$ and $b \to s \ell^+ \ell^-$ have been accumulated. A possible New Physics…

High Energy Physics - Phenomenology · Physics 2019-12-11 Sokratis Trifinopoulos

We propose a simple model of spontaneous lepton number violation with potentially large flavor violating decays, including the possibility that majoron emitting decays, such as $\mu \to e \, J$, saturate the experimental bounds. In this…

High Energy Physics - Phenomenology · Physics 2022-02-09 Pablo Escribano , Martin Hirsch , Jacopo Nava , Avelino Vicente

We study a simple one-loop induced neutrino mass model that contains both bosonic and fermionic dark matter candidates and has the capacity to explain the muon anomalous magnetic moment anomaly. We perform a comprehensive analysis by taking…

High Energy Physics - Phenomenology · Physics 2019-01-24 Cheng-Wei Chiang , Hiroshi Okada , Eibun Senaha

Recent anomalies in the decays of $B$ mesons and the Higgs boson provide hints towards lepton flavor (universality) violating physics beyond the Standard Model. We observe that four-fermion operators which can explain the $B$-physics…

High Energy Physics - Phenomenology · Physics 2016-05-13 Andreas Crivellin , Giancarlo D'Ambrosio , Martin Hoferichter , Lewis C. Tunstall

Experimental hints for lepton-flavor universality violation in the muon's magnetic moment as well as neutral- and charged-current $B$-meson decays require Standard-Model extensions by particles such as leptoquarks that generically lead to…

High Energy Physics - Phenomenology · Physics 2022-05-26 Julian Heeck , Anil Thapa

LHCb found hints for physics beyond the standard model in $B\to K^*\mu^+\mu^-$, $B\to K^*\mu^+\mu^-/B\to K^*e^+e^-$ and $B_s\to\phi\mu^+\mu^-$. In addition, the BABAR results for $B\to D^{(*)}\tau\nu$ and the CMS excess in…

High Energy Physics - Phenomenology · Physics 2016-04-20 Andreas Crivellin

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

One of the main motivations to look beyond the SM is the discrepancy between the theoretical prediction and observation of anomalous magnetic moment of muon. Alleviating this tension between theory and experiment and satisfying the bounds…

High Energy Physics - Phenomenology · Physics 2021-03-24 Nivedita Ghosh , Jayita Lahiri

The muon $(g-2)_\mu$ and $b\to s \bar \mu \mu$ induced $B$ anomalies as hints of new physics beyond the standard model (SM) have attracted much attention. These two anomalies indicate that there may exist new interaction specifically…

High Energy Physics - Phenomenology · Physics 2022-04-20 Jian-Yong Cen , Yu Cheng , Xiao-Gang He , Jin Sun
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