Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at √s =13 TeV

CMS Collaboration

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115 Citations (Scopus)

Abstract

A search for narrow, low-mass, scalar, and pseudoscalar resonances decaying to bottom quark-antiquark pairs is presented. The search is based on events recorded in s=13 TeV proton-proton collisions with the CMS detector at the LHC, collected in 2016, and corresponding to an integrated luminosity of 35.9 fb-1. The search selects events in which the resonance would be produced with high transverse momentum because of the presence of initial- or final-state radiation. In such events, the decay products of the resonance would be reconstructed as a single large-radius jet with high mass and two-prong substructure. A potential signal would be identified as a narrow excess in the jet invariant mass spectrum. No evidence for such a resonance is observed within the mass range from 50 to 350 GeV, and upper limits at 95% confidence level are set on the product of the cross section and branching fraction to a bottom quark-antiquark pair. These constitute the first constraints from the LHC on exotic bottom quark-antiquark resonances with masses below 325 GeV.
Original languageEnglish
Article number012005
Number of pages25
JournalPhysical Review D
Volume99
Issue number1
Publication statusPublished - 2019
Externally publishedYes

Keywords

  • Collisions
  • Proton–proton collisions
  • Jets

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