Collider constraints on Z′ models for neutral current B-anomalies

A bstract We examine current collider constraints on some simple Z ′ models that fit neutral current B -anomalies, including constraints coming from measurements of Standard Model (SM) signatures at the LHC. The ‘MDM’ simplified model is not constrained by the SM measurements but is strongly constrained by a 139 fb −1 13 TeV ATLAS di-muon search. Constraints upon the ‘MUM’ simplified model are much weaker. A combination of the current B s mixing constraint and ATLAS’ Z ′ search implies M_Z>1.2 M Z ′ > 1.2 TeV in the Third Family Hypercharge Model example case. LHC SM measurements rule out a portion of the parameter space of the model for M_Z>1.5 M Z ′ > 1.5 TeV.