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.

arXiv comment6 pages, 7 figures. v2: minor corrections throughout the text to match the version published in PRD

References in corpus (27)

• The Low-Energy Frontier of Particle Physics
• Experimental Searches for the Axion and Axion-like Particles
• Physics Beyond Colliders at CERN: Beyond the Standard Model Working Group Report
• Collider Probes of Axion-Like Particles
• The Dark Photon
• Search for a new gauge boson in the $A^{\prime }$ Experiment (APEX)
• 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
• Limit on the production of a new vector boson in ${\mathrm{e}}^{+}{\mathrm{e}}^{-}\to \mathrm{U}\gamma$, U$\to {\pi }^{+}{\pi }^{-}$ with the KLOE experiment
• Search for Axion-Like Particles produced in $e^{+}{e}^{-}$ collisions at Belle II
• LHC as an Axion Factory: Probing an Axion Explanation for $(g-2{)}_{\mu }$ with Exotic Higgs Decays
• Implications of a Light "Dark Higgs" Solution to the $g_{\mu }-2$ Discrepancy
• The quest for axions and other new light particles
• New Physics and the Proton Radius Problem
• Dark Photon Search in the Mass Range Between 1.5 and 3.4 GeV/$c^2$
• 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

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