Papers › Inclusive Dark Photon Search at LHCb
Inclusive Dark Photon Search at LHCb
Philip Ilten, Yotam Soreq, Jesse Thaler, Mike Williams, Wei Xue
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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′ →μ^+ μ^- rate can be directly inferred from the off-shell photon γ^* →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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