Search for t t ¯ resonances in highly boosted lepton+jets and fully hadronic final states in proton-proton collisions at √s=13 TeV

A search for the production of heavy resonances decaying into top quarkantiquark pairs is presented. The analysis is performed in the lepton+jets and fully hadronic channels using data collected in proton-proton collisions at √ s = 13 TeV using the CMS detector at the LHC, corresponding to an inte...

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Bibliographic Details
Main Authors: Khachatryan, Vardan, Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Md. Ali, Mohd. Adli
Format: Article
Language:English
English
Published: American Physical Society 2017
Subjects:
Online Access:http://irep.iium.edu.my/63125/
http://irep.iium.edu.my/63125/
http://irep.iium.edu.my/63125/
http://irep.iium.edu.my/63125/1/63125_Search%20for%20t%20t%20%C2%AF%20resonances%20in%20highly%20boosted_article.pdf
http://irep.iium.edu.my/63125/2/63125_Search%20for%20t%20t%20%C2%AF%20resonances%20in%20highly%20boosted_scopus.pdf
Description
Summary:A search for the production of heavy resonances decaying into top quarkantiquark pairs is presented. The analysis is performed in the lepton+jets and fully hadronic channels using data collected in proton-proton collisions at √ s = 13 TeV using the CMS detector at the LHC, corresponding to an integrated luminosity of 2.6 fb−1 . The selection is optimized for massive resonances, where the top quarks have large Lorentz boosts. No evidence for resonant t¯t production is found in the data, and upper limits on the production cross section of heavy resonances are set. The exclusion limits for resonances with masses above 2 TeV are significantly improved compared to those of previous analyses at √ s = 8 TeV.