Implications of recent ${\left(g-2\right)}_{\mu }$ measurements for MeV-GeV dark sector searches

Abstract

Recent theoretical and experimental studies of the muon magnetic moment indicate the absence of the previously reported discrepancy, providing a vital opportunity to constrain potential BSM physics. In this work, we explore the MeV-GeV mass range, where existing exclusion limits remain relatively loose. We analyze both scalar and pseudoscalar as well as vector and axial vector mediators. We demonstrate that the new bounds are not only comparable to - but in several cases, significantly more stringent than - the constraints obtained from previous collider experiments, even when near-future projections are considered.

6 pages, 7 figures. v2: minor corrections throughout the text to match the version published in PRD

References in corpus (17)

• Collider Probes of Axion-Like Particles
• The Dark Photon
• Dark photon limits: a handbook
• Revised constraints and Belle II sensitivity for visible and invisible axion-like particles
• Search for $A^{\prime }\to {\mu }^{+}{\mu }^{-}$ decays
• Measurement of the Electron Magnetic Moment
• Search for light massive gauge bosons as an explanation of the $(g-2{)}_{\mu }$ anomaly at MAMI
• A New Flavor of Searches for Axion-Like Particles
• Tenth-Order Electron Anomalous Magnetic Moment --- Contribution of Diagrams without Closed Lepton Loops
• Contributions of axion-like particles to lepton dipole moments
• The anomalous magnetic moment of the muon in the Standard Model: an update
• Search for Axion-Like Particles produced in $e^{+}{e}^{-}$ collisions at Belle II
• Challenges for an axion explanation of the muon $g-2$ measurement
• A Custodial Symmetry for Muon g-2
• Search for di-photon decays of an axion-like particle in radiative $J/\psi$ decays
• The ALP explanation to muon $(g-2)$ and its test at future Tera-$Z$ and Higgs factories
• Constraints for scalars and pseudoscalars from ${\left(g-2\right)}_l$ and existing $e^{+}{e}^{-}$ colliders

Cited by in corpus (1)

• New Physics Searches via Beam Normal Spin Asymmetry in Bhabha Scattering