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Compact Muon Solenoid
LHC, CERN

CMS-PAS-EXO-19-018
Search for a narrow resonance decaying to a pair of muons in proton-proton collisions at 13 TeV
Abstract: A search is presented for a narrow resonance decaying to a pair of muons using 13 TeV proton-proton collision data recorded by the CMS experiment at the CERN LHC. The search in the 45-75 and 110-200 GeV resonance mass ranges uses fully reconstructed event data, corresponding to an integrated luminosity of 137 fb$^{-1}$. The search in the 11.5-45.0 GeV mass range uses 96.6 fb$^{-1}$ of data collected using a dedicated set of high rate dimuon triggers with low thresholds, which store a reduced amount of trigger level information. No significant resonant peaks are observed. The search sets the strongest constraints on a hypothetical dark photon heavier than 11.5 GeV.
CMS Publications
Compact Muon Solenoid
LHC, CERN