CMS-PAS-EXO-24-039

CMS-PAS-EXO-24-039
Search for resonant and nonresonant production of pairs of dijet resonances with b jets in the final state in proton-proton collisions at $ \sqrt{s} = $ 13 TeV
CMS Collaboration
2026-03-17

Abstract: A search is presented for pairs of dijet resonances with identical mass, each containing one jet originating from a b quark and one jet from a light flavor quark. The search uses a data sample corresponding to an integrated luminosity of 138 fb$ ^{-1} $ collected by the CMS detector in proton-proton collisions at $ \sqrt{s}= $ 13 TeV. A machine learning based tagger is used for the identification of at least one b jet within each dijet resonance. Results are presented separately for the case where the four-jet production proceeds via an intermediate resonant state, and for nonresonant production. Upper limits at 95$ % $ confidence level are reported on the production of four-jet and dijet resonances with b jets in the final state. These are the first LHC limits on resonant dijet pair production involving b jets that are outside the standard model. The results are also used to set limits at the 95$ % $ confidence level on the diquark-to-diquark model with masses between 2 and 7 TeV. The nonresonant search excludes pair production of top squarks, with masses between 0.5 and 0.8 TeV, extending previous searches for such $ R $-parity-violating decays to s and b quarks.
Links: CDS record (PDF) ; CADI line (restricted) ;

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