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

CMS Collaboration

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49 Citations (Scopus)

Abstract

A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at s=13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. The hypothetical resonance is produced with sufficiently high transverse momentum that its decay products are merged into a single jet with two-prong substructure. A signal would be identified as a peak over a smoothly falling background in the distribution of the invariant mass of the jet, using novel jet substructure techniques. No evidence for such a resonance is observed within the mass range of 50-300 GeV. Upper limits at 95% confidence level are set on the production cross section, and presented in a mass-coupling parameter space. The limits further constrain simplified models of dark matter production involving a mediator interacting between quarks and dark matter particles through a vector or axial-vector current. In the framework of these models, the results are the most sensitive to date, extending for the first time the search region to masses below 100 GeV.
Original languageEnglish
Article number97
Number of pages41
JournalJournal of High Energy Physics
Volume2018
Issue number1
DOIs
Publication statusPublished - 2018
Externally publishedYes

Keywords

  • Jet substructure
  • Hadron-Hadron scattering (experiments)
  • Dark matter
  • Jets

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