The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb-1. The significance of the tt signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σtt=45±8 nb, consistent with predictions from perturbative quantum chromodynamics.

Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2017). Observation of Top Quark Production in Proton-Nucleus Collisions. PHYSICAL REVIEW LETTERS, 119(24), 242001-1-242001-17 [10.1103/PhysRevLett.119.242001].

Observation of Top Quark Production in Proton-Nucleus Collisions

Battilana, C.;Bonacorsi, D.;BORGONOVI, LISA;Braibant-Giacomelli, S.;Campanini, R.;Capiluppi, P.;Castro, A.;Chhibra, S. S.;Codispoti, G.;Cuffiani, M.;Fanfani, A.;Fasanella, D.;Guiducci, L.;Navarria, F. L.;Rossi, A. M.;Rovelli, T.;Siroli, G. P.;Tosi, N.;LUO, JIAHUIZI;Das, S.;WANG, XIAO FANG;CHEN, ZHIYI;Roberts, J.;SHI, WEN;SCERRI, THOMAS STEVEN;NUNEZ DELGADO, PEDRO ANTONIO;ZALESKI, STEPHANE LUDOVIC RICHARD;
2017

Abstract

The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb-1. The significance of the tt signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σtt=45±8 nb, consistent with predictions from perturbative quantum chromodynamics.
2017
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2017). Observation of Top Quark Production in Proton-Nucleus Collisions. PHYSICAL REVIEW LETTERS, 119(24), 242001-1-242001-17 [10.1103/PhysRevLett.119.242001].
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erã¶, J.; Escalante D...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/618997
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