Constraints on the Dark Photon Parameter Space from Leptonic Rare Kaon Decays

Abstract

With anomalies found in cosmic ray observations and unsolved questions of the Standard Model of particle physics like the discrepancy in the muon's anomalous magnetic moment, the idea of an U(1) extension of the Standard Model arose. This extension allows for the interaction of Dark Matter by exchange of a photon-like massive force carrier $A^{\prime }$ not included in the Standard Model. We discuss the possibility to constrain the dark photon parameter space by using data taken from rare kaon decays. Therefore we analyze the decay $K\to \mu \nu A^{\prime }$ as a signal process and calculate the expected Standard Model background. Using these results we calculate new limits on the $A^{\prime }$ parameter space, providing motivations for new rare kaon decay experiments to extend the existing $A^{\prime }$ bounds.

5 pages, 4 figures

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• A Theory of Dark Matter
• Secluded U(1) below the weak scale
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• Probing Dark Forces and Light Hidden Sectors at Low-Energy e+e- Colliders
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Cited by in corpus (10)

• New Exclusion Limits on Dark Gauge Forces from Proton Bremsstrahlung in Beam-Dump Data
• Muon g-2, Rare Kaon Decays, and Parity Violation from Dark Bosons
• Constraints on New Neutrino Interactions via Light Abelian Vector Bosons
• Search for MeV dark photons in a light-shining-through-walls experiment at CERN
• Implications of a Light "Dark Higgs" Solution to the $g_{\mu }-2$ Discrepancy
• Probing a dark photon using rare leptonic kaon and pion decays
• Proposal for an Experiment to Search for Light Dark Matter at the SPS
• Constraints on $L_{\mu }-L_{\tau }$ Gauge Interactions from Rare Kaon Decay
• Update on Hidden Sectors with Dark Forces and Dark Matter
• Search for Light Neutral Bosons in the TREK/E36 Experiment at J-PARC