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Committee for collaboration of Czech Republic

with Joint Institute for Nuclear Research in Dubna Login
Search for third-generation scalar leptoquarks decaying to a top quark and a tau lepton at root s=13 TeV

Author
Sirunyan A.M. Yerevan Physics Institute, Armenia
Finger Miroslav, prof. Ing. DrSc. Faculty of Mathematics and Physics, Charles University in Prague
Finger Michael, M.Sc. CSc. Faculty of Mathematics and Physics, Charles University in Prague, JINR Dubna
et al.  CMS collaboration

Year
2018

Scientific journal
European Physical Journal C, 78 (9), 707

Web


Abstract
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.

Cite article as:
A. Sirunyan, M. Finger, M. Finger, . et al., "Search for third-generation scalar leptoquarks decaying to a top quark and a tau lepton at root s=13 TeV", European Physical Journal C, 78 (9), 707 (2018)