Search for excited quarks in the γ+jet final state in proton–proton collisions at √s = 8 TeV

CMS Collaboration

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22 Citations (Scopus)

Abstract

A search for excited quarks decaying into the γ+jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7fb−1 collected by the CMS experiment in proton–proton collisions at √s = 8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ+jet invariant mass distribution is studied to search for a resonance peak. The 95% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength; masses below 3.5 TeV are excluded at 95% confidence level for unit couplings to their standard model partners.
Original languageEnglish
Pages (from-to)274-293
Number of pages20
JournalPhysics Letters B
Volume738
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • CMS
  • Physics
  • Photon
  • Jet

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