Searches for dark photons at accelerators

Abstract

Dark matter particles may interact with other dark matter particles via a new force mediated by a dark photon, $A^{\prime }$, which would be the dark-sector analog to the ordinary photon of electromagnetism. The dark photon can obtain a highly suppressed mixing-induced coupling to the electromagnetic current, providing a portal through which dark photons can interact with ordinary matter. This review focuses on $A^{\prime }$ scenarios that are potentially accessible to accelerator-based experiments. We summarize the existing constraints placed by such experiments on dark photons, highlight what could be observed in the near future, and discuss the major experimental challenges that must be overcome to improve sensitivities.

27 pages, 7 figures; Invited contribution for Annual Review of Nuclear and Particle Science

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Cited by in corpus (19)

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• Probing the dark photon via polarized DIS scattering at the HERA and EIC
• Belle II sensitivity to long-lived dark photons
• Axial vectors in DarkCast
• (In)Visible signatures of the minimal dark abelian gauge sector
• Dark Moments for the Standard Model ?
• Probing sub-GeV leptophilic dark matter at Belle II and NA64
• Probing light exotics from a hidden sector at $c$-$\tau$ factories with polarized electron beams
• The dark side of the proton
• Gamma Factory Searches for Extremely Weakly-Interacting Particles
• Robust and Provably Monotonic Networks
• Explorations of pseudo-Dirac dark matter having keV splittings and interacting via transition electric and magnetic dipole moments
• Hitting two BSM particles with one lepton-jet: search for a top partner decaying to a dark photon, resulting in a lepton-jet
• $A^{\prime }$ view of the sunrise: Boosting helioscopes with angular information
• Search for invisible dark photon in $\gamma e$ scattering at future lepton colliders
• Search for Dark Sector by Repurposing the UVX Brazilian Synchrotron
• Dark Photon bounds in the dark EFT