engleski

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 $\sqrt{; ; ; s}; ; ; =$ 13 TeV, 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.

High energy physics ; Experimental particle physics ; LHC ; CMS ; Physics ; Beyond two generations ; Excited top quark ; Hadron-Hadron scattering (experiments) ; Supersymmetry ; Beyond Standard Model ; Lepton production ; Data acquisition concepts ; Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases) ; Modular electronics ; Optical detector readout concepts ; Particle Physics Experiments ; Data ; Higgs ; Muon

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