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arXiv · 1603.08926

Inclusive Dark Photon Search at LHCb

Philip Ilten·Yotam Soreq·Jesse Thaler·Mike Williams·Wei Xue
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Abstract

We propose an inclusive search for dark photons $A'$ at the LHCb experiment based on both prompt and displaced di-muon resonances. Because the couplings of the dark photon are inherited from the photon via kinetic mixing, the dark photon $A' \to μ^+ μ^-$ rate can be directly inferred from the off-shell photon $γ^* \to μ^+ μ^-$ rate, making this a fully data-driven search. For Run 3 of the LHC, we estimate that LHCb will have sensitivity to large regions of the unexplored dark-photon parameter space, especially in the 210-520 MeV and 10-40 GeV mass ranges. This search leverages the excellent invariant-mass and vertex resolution of LHCb, along with its unique particle-identification and real-time data-analysis capabilities.

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Philip Ilten, Yotam Soreq, Jesse Thaler, Mike Williams, Wei Xue. 2016-06-21. Inclusive Dark Photon Search at LHCb. https://doi.org/10.1103/physrevlett.116.251803

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