Probing the dark axion portal with muon anomalous magnetic moment

Ge, Shao-Feng; Ma, Xiao-Dong; Pasquini, Pedro

doi:10.1140/epjc/s10052-021-09571-1

Cited by 30 publications

(12 citation statements)

References 78 publications

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“…The gauged L µ − L τ in general faces the least severe constraints [166,[178][179][180][244][245][246][247][248][249]. Other examples include flavor violating ALPs [250], from photonic couplings of ALPs [251][252][253], or from ALP with a dark photon [254].…”

Section: Anomalous Magnetic Moment Of the Muonmentioning

confidence: 99%

Snowmass White Paper: Flavor Model Building

Altmannshofer¹,

Zupan²

2022

Preprint

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In this white paper for the Snowmass process, we summarize the role flavor model building plays in the quest for new physics. We review approaches to address the non-generic flavor structure of the Standard Model and discuss how new physics models can be made compatible with the stringent constraints from flavor changing processes that indirectly probe very high scales. We also give an overview of the persistent anomalies in B decays and the anomalous magnetic moment of the muon and some of their most popular new physics explanations.

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Section: Anomalous Magnetic Moment Of the Muonmentioning

confidence: 99%

Snowmass White Paper: Flavor Model Building

Altmannshofer¹,

Zupan²

2022

Preprint

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“…In this Section we consider constraints on the dark relaxion. We first list the bounds from the relaxion mechanism itself, before showing how the remaining parameter space for our model is constrained by the phenomenology of the dark axion portal [56,[68][69][70][71][72][73][74][75][76]. Relaxion phenomenology has been studied more generally in Refs.…”

Section: Phenomenology Of the Dark Relaxion Portalmentioning

confidence: 99%

Cosmological Relaxation through the Dark Axion Portal

Domcke¹,

Schmitz²,

You³

2021

Preprint

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The dark axion portal is a coupling of an axion-like particle to a dark photon kinetically mixed with the visible photon. We show how this portal, when applied to the relaxion, can lead to cosmological relaxation of the weak scale using dark photon production. The key backreaction mechanism involves the Schwinger effect: As long as electroweak symmetry is unbroken, Schwinger production of massless Standard Model fermions, which carry dark millicharges, suppresses the dark photon production. Once the electroweak symmetry is broken, the fermions acquire mass and the suppression is lifted. An enhanced dark photon dissipation then traps the relaxion at a naturally small weak scale. Our model thus provides a novel link between the phenomenological dark axion portal, dark photons, and the hierarchy problem of the Higgs mass.

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“…When the BSM models are built in a flavor blind fashion, their g − 2 predictions for the electron and muon are correlated by ∆a e /∆a µ = m 2 e /m 2 µ . The SM prediction calculated up to ten loops within QED [14-17] yields a SM e = 1.159652181643 (25) (23) (16)(763) × 10 −3 , which is, in contrast to the muon g − 2 prediction, greater than the experimental results for the electron g − 2, ∆a e = −(8.8 ± 3.6) × 10 −13 .…”

Section: Introductionmentioning

confidence: 95%

Electron and muon magnetic moments and implications for dark matter and model characterisation in non-universal U(1)′ supersymmetric models

Frank

Hiçyılmaz

Mondal

et al. 2021

J. High Energ. Phys.

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We attribute deviations of the muon and electron magnetic moments from the theoretical predictions to the presence of an additional U(1)′ supersymmetric model. We interpret the discrepancies between the muon and electron anomalous magnetic moments to be due to the presence of non-universal U(1)′ charges. In a minimally extended model, we show that requiring both deviations to be satisfied imposes constraints on the spectrum of the model, in particular on dark matter candidates and slepton masses and ordering. Choosing three benchmarks with distinct dark matter features, we study implications of the model at colliders, concentrating on variables that can distinguish our non-universal scenario from other U(1)′ implementations.

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Probing the dark axion portal with muon anomalous magnetic moment

Cited by 30 publications

References 78 publications

Snowmass White Paper: Flavor Model Building

Snowmass White Paper: Flavor Model Building

Cosmological Relaxation through the Dark Axion Portal

Electron and muon magnetic moments and implications for dark matter and model characterisation in non-universal U(1)′ supersymmetric models

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