Muon $g-2$ and $B$-anomalies from Dark Matter

Arcadi, Giorgio; Calibbi, Lorenzo; Fedele, Marco; Mescia, Federico

doi:10.48550/arxiv.2104.03228

Cited by 18 publications

(25 citation statements)

References 58 publications

(88 reference statements)

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“…Refs [31][32][33][34][35][36]. 4 The b → s anomaly can be explained by loop corrections involving VL families[37][38][39][40][41][42][43][44][45].…”

mentioning

confidence: 99%

$\ge 4 μ$ signal from a vector-like lepton decaying to a muon-philic $Z^\prime$ boson at the LHC

Kawamura,

Raby

2021

Preprint

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We propose a novel possibility to detect a very distinctive signal with more than four muons originating from pair-produced vector-like leptons decaying to a muon-philic Z boson. These new particles are good candidates to explain the anomalies in the muon anomalous magnetic moment and the b → s processes. The doublet (singlet) vector-like leptons lighter than 1.3 (1.0) TeV are excluded by the latest data at the LHC if BR(E → Z µ) = 1. We also show that the excess in the signal region with more than five leptons can be explained by this scenario if the vector-like lepton is a weak singlet, with mass about 400 GeV and BR(E → Z µ) = 0.25. The future prospects at the HL-LHC are discussed.

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“…Refs [31][32][33][34][35][36]. 4 The b → s anomaly can be explained by loop corrections involving VL families[37][38][39][40][41][42][43][44][45].…”

mentioning

confidence: 99%

$\ge 4 μ$ signal from a vector-like lepton decaying to a muon-philic $Z^\prime$ boson at the LHC

Kawamura,

Raby

2021

Preprint

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“…other hand, connection between dark matter and muon (g − 2) have also been studied in several earlier works, but with tree level muon mass [21][22][23][24][25][26][27].…”

Section: Table I Fermion Content Of the Minimal Modelmentioning

confidence: 99%

Anomalous Magnetic Moment and Higgs Coupling of the Muon in a Sequential U(1) Gauge Model with Dark Matter

Adhikari,

Bhat,

Borah

et al. 2021

Preprint

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We study an Abelian gauge extension of the standard model with fermion families having nonuniversal gauge charges. The gauge charges and scalar content are chosen in such an anomaly-free way that only the third generation fermions receive Dirac masses via renormalisable couplings with the Higgs boson. Incorporating additional vector like fermions and scalars with appropriate U (1) charges can lead to radiative Dirac masses of first two generations with neutral fermions going in the loop being dark matter candidates. Focusing on radiative muon mass, we constrain the model from the requirement of satisfying muon mass, recently measured muon anomalous magnetic moment by the E989 experiment at Fermilab along with other experimental bounds including the large hadron collider (LHC) limits. The anomalous Higgs coupling to muon is constrained from the LHC measurements of Higgs to dimuon decay. The singlet fermion dark matter phenomenology is discussed showing the importance of both annihilation and coannihilation effects. Incorporating all bounds lead to a constrained parameter space which can be probed at different experiments.

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“…If this discrepancy is indeed the result of new physics, then we expect new states coupled to muons. The new physics models are of two types [200,201]: if the chirality flip in (g − 2) µ is due to the external muon leg, the NP needs to be light, while NP can be heavy if the chirality flip is due to the states running in the loop. Rare kaon decays can shed light on the light NP models.…”

Section: Leptonic Force Mediatorsmentioning

confidence: 99%

New Physics Searches at Kaon and Hyperon Factories

Goudzovski¹,

Redigolo²,

Tobioka³

et al. 2022

Preprint

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Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths and the availability of very large datasets. On the other hand, useful complementary information is provided by hyperon decay measurements. We summarize the relevant phenomenological models and the status of the searches in a comprehensive list of kaon and hyperon decay channels. We identify new search strategies for under-explored signatures, and demonstrate that the improved sensitivities from current and nextgeneration experiments could lead to a qualitative leap in the exploration of light dark sectors.

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Muon $g-2$ and $B$-anomalies from Dark Matter

Cited by 18 publications

References 58 publications

$\ge 4 μ$ signal from a vector-like lepton decaying to a muon-philic $Z^\prime$ boson at the LHC

$\ge 4 μ$ signal from a vector-like lepton decaying to a muon-philic $Z^\prime$ boson at the LHC

Anomalous Magnetic Moment and Higgs Coupling of the Muon in a Sequential U(1) Gauge Model with Dark Matter

New Physics Searches at Kaon and Hyperon Factories

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