A search for the production of heavy resonances decaying into top quark-antiquark pairs is presented. The analysis is performed in the lepton+jets and fully hadronic channels using data collected in proton-proton collisions at root 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) over bar 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 root s = 8 TeV.

Search for t(t)over-bar resonances in highly boosted lepton plus jets and fully hadronic final states in proton-proton collisions at root s=13 TeV

ZOTTO, PIERLUIGI;AZZI, PATRIZIA;BENATO, LISA;BISELLO, DARIO;BOLETTI, ALESSIO;CARLIN, ROBERTO;CHECCHIA, PAOLO;DALL'OSSO, MARTINO;GASPARINI, UGO;GOZZELINO, ANDREA;LACAPRARA, STEFANO;MARGONI, MARTINO;MENEGUZZO, ANNA TERESA;POZZOBON, NICOLA;RONCHESE, PAOLO;ROSSIN, ROBERTO;SIMONETTO, FRANCO;TORASSA, EZIO;ZANETTI, MARCO;Tosi, M.;Triossi, A.;
2017

Abstract

A search for the production of heavy resonances decaying into top quark-antiquark pairs is presented. The analysis is performed in the lepton+jets and fully hadronic channels using data collected in proton-proton collisions at root 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) over bar 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 root s = 8 TeV.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3239813
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