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

A search for pair production of heavy scalar leptoquarks (LQs), each decaying into a top quark and a τ lepton, is presented. The search considers final states with an electron or a muon, one or two τ leptons that decayed to hadrons, and additional jets. The data were collected in 2016 in proton–p...

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Bibliographic Details
Main Authors: Sirunyan, A.M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli
Format: Article
Language:English
English
Published: Springer Link 2018
Subjects:
Online Access:http://irep.iium.edu.my/70515/
http://irep.iium.edu.my/70515/
http://irep.iium.edu.my/70515/
http://irep.iium.edu.my/70515/1/70515_Search%20for%20third-generation%20scalar%20leptoquarks_article.pdf
http://irep.iium.edu.my/70515/7/70515_Search%20for%20third-generation%20scalar%20leptoquarks%20decaying_scopus.pdf
Description
Summary:A search for pair production of heavy scalar leptoquarks (LQs), each decaying into a top quark and a τ lepton, is presented. The search considers final states with an electron or a muon, one or two τ leptons that decayed to hadrons, and additional jets. The data were collected in 2016 in proton–proton collisions at √s = 13 TeV with the CMS detector at the LHC, and correspond to an integrated luminosity of 35.9 fb−1. No evidence for pair production of LQs is found. Assuming a branching fraction of unity for the decay LQ → tτ , 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 τ lepton.