A search for pair production of new light bosons decaying into muons in proton-proton collisions at 13 TeV

A search for new light bosons decaying into muon pairs is presented using a data sample corresponding to an integrated luminosity of 35.9 fb−1 of proton-proton collisions at a center-of-mass energy s=13TeV , collected with the CMS detector at the CERN LHC. The search is model independent, only requiring the pair production of a new light boson and its subsequent decay to a pair of muons. No significant deviation from the predicted background is observed. A model independent limit is set on the product of the production cross section times branching fraction to dimuons squared times acceptance as a function of new light boson mass. This limit varies between 0.15 and 0.39 fb over a range of new light boson masses from 0.25 to 8.5 GeV. It is then interpreted in the context of the next-to-minimal supersymmetric standard model and a dark supersymmetry model that allows for nonnegligible light boson lifetimes. In both cases, there is significant improvement over previously published limits.

Note:

Submitted to Phys. Lett. B. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-18-003 (CMS Public Pages) •
Submitted to Phys.Lett.

CMS
New light boson
Supersymmetry
Hidden sector
Dark photon
Muon
p p: colliding beams
boson: leptonic decay
boson: mass
muon: pair production

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