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Search for third-generation scalar leptoquarks decaying to a top quark and a τ lepton at √s = 13 TeV

  • Sirunyan, A. M.
  • Tumasyan, A.
  • Adam, W.
  • Ambrogi, F.
  • Asilar, E.
  • Bergauer, T.
  • Brandstetter, J.
  • Brondolin, E.
  • Dragicevic, M.
  • Eroe, J.
  • Del Valle, A. Escalante
  • Flechl, M.
  • Friedl, M.
  • Fruehwirth, R.
  • Ghete, V. M.
  • Grossmann, J.
  • Hrubec, J.
  • Jeitler, M.
  • Koenig, A.
  • Krammer, N.
  • And 2235 more
Publication Date
Jan 01, 2018
Ghent University Institutional Archive
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search for pair production of heavy scalar leptoquarks (LQs), each decaying into a top quark and a tau lepton, is presented. The search considers final states with an electron or a muon, one or two tau leptons that decayed to hadrons, and additional jets. The data were collected in 2016 in proton-proton collisions at root s = 13 TeV with the CMS detector at the LHC, and correspond to an integrated luminosity of 35.9fb(-1). No evidence for pair production of LQs is found. Assuming a branching fraction of unity for the decay LQ -> t tau, upper limits on the production cross section are set as a function of LQ mass, excluding masses below 900 GeV at 95% confidence level. These results provide the most stringent limits to date on the production of scalar LQs that decay to a top quark and a tau lepton.

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