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 root(S)(NN) = 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 sigma(tt) = 45 +/- 8 nb, consistent with predictions from perturbative quantum chromodynamics.

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

Observation of Top Quark Production in Proton-Nucleus Collisions

Ciocci, M. A.;Grippo, M. T.;Messineo, A.;
2017-01-01

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 root(S)(NN) = 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 sigma(tt) = 45 +/- 8 nb, consistent with predictions from perturbative quantum chromodynamics.
2017
Sirunyan, A.M., Turnasyan, A., Adam, W., Arribrogi, F., Asilar, E., Bergauer, T., et al. (2017). Observation of Top Quark Production in Proton-Nucleus Collisions. PHYSICAL REVIEW LETTERS, 119(24) [10.1103/PhysRevLett.119.242001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1327723