Coy Dark Matter and the anomalous magnetic moment

Abstract

Coy Dark Matter removes the tension between the traditional WIMP paradigm of Dark Matter and the latest exclusion bounds from direct detection experiments. In this paper we present a leptophilic Coy Dark Matter model that, on top of explaining the spatially extended 1-5 GeV $\gamma$-ray excess detected at the Galactic Center, reconciles the measured anomalous magnetic moment of muon with the corresponding Standard Model prediction. The annihilation channel of DM is $\chi \chi \to \tau \bar{\tau }$ with the DM mass $m_{\chi }=9.43{(}_{-0.52}^{+.063}stat.)(\pm 1.2sys.)$ GeV given by best-fit of the $\gamma$-ray excess. Fitting the measured anomalous magnetic moment of the muon requires instead a pseudoscalar mediator with a minimal mass $m_a=12_{-3}^{+7}$ GeV.

added references, some minor corrections

References in corpus (13)

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Cited by in corpus (25)

• A taste of dark matter: Flavour constraints on pseudoscalar mediators
• Hidden On-Shell Mediators for the Galactic Center Gamma-Ray Excess
• Toward (Finally!) Ruling Out Z and Higgs Mediated Dark Matter Models
• Dark Matter Complementarity and the Z${}^{\prime }$ Portal
• Not so Coy Dark Matter explains DAMA (and the Galactic Center excess)
• Pseudoscalar Portal Dark Matter
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
• Pseudoscalar Mediators: A WIMP model at the Neutrino Floor
• Antiproton constraints on the GeV gamma-ray excess: a comprehensive analysis
• Towards a realistic astrophysical interpretation of the gamma-ray Galactic center excess
• Model-independent analysis of the DAMPE excess
• Multimediator models for the galactic center gamma ray excess
• Constraining Dark Matter Interactions with Pseudoscalar and Scalar Mediators Using Collider Searches for Multi-jets plus Missing Transverse Energy
• Cornering pseudoscalar-mediated dark matter with the LHC and cosmology
• Effect of CP violation in the singlet-doublet dark matter model
• Confronting Galactic center and dwarf spheroidal gamma-ray observations with cascade annihilation models
• Muon g-2 and galactic centre $\gamma$-ray excess in a scalar extension of the 2HDM type-X
• Fermionic Dark Matter through a Light Pseudoscalar Portal: Hints from the DAMA Results
• Ultra High Energy Cosmic Rays & Super-heavy Dark Matter
• Interpreting the Fermi-LAT gamma ray excess in the simplified framework
• Modifying dark matter indirect detection signals by thermal effects at freeze-out
• Search for a new pseudoscalar decaying into a pair of muons in events with a top-quark pair at $\sqrt{s}=13$ TeV with the ATLAS detector
• Gamma-ray line constraints on Coy Dark Matter
• Search for Scalar Dark Matter via Pseudoscalar Portal Interactions: In Light of the Galactic Center Gamma-Ray Excess
• Dark matter properties implied by gamma ray interstellar emission models