A search for resonances in the mass range 12-70 GeV produced in association with a b quark jet and a second jet, and decaying to a muon pair, will be reported. The analysis is based on data from proton-proton collisions at center-of-mass energies of 8 and 13 TeV (2016).
An excess of events above the background near a dimuon mass of 28 GeV is observed in the 8 TeV data, corresponding to local significances of 4.2 and 2.9 standard deviations in two event categories. A similar analysis conducted with the 13 TeV data results in a mild excess over the background in the first event category corresponding to a local significance of 2.0, while the second category results in a 1.4 standard deviation deficit.
Analysis is published in arXiv:1808.01890 (Submitted to JHEP).
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