A Model Independent Search for New Bosons Decaying into Muons at LHC

A model independent search for pair production of new bosons in parameter space of mass, 0.21 < m < 60 GeV, and lifetime, 0 < ctau< 100 mm, is reported using events with four muons. The dataset corresponds to 59.7/fb of proton-proton collisions at \sqrt{s} = 13 TeV recorded during 2018 by the CMS experiment at the CERN LHC. No significant deviation from the predicted background is observed. A model independent upper limit on the product of the cross section, branching fraction, and acceptance is derived. The results are interpreted in the context of several benchmark models, namely, the axion-like particle model, dark supersymmetric models including those predicting a non-negligible lifetime of the new boson, and the next-to-minimal supersymmetric standard model.