A measurement of the t t ¯ production cross section at s=13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 fb−1, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the accompanying jet multiplicity. From a likelihood fit to the invariant mass distribution of the isolated lepton and a jet identified as coming from the hadronization of a bottom quark, the cross section is measured to be σtt¯=888±2,(stat)−28+26(syst)±20(lumi) pb, in agreement with the standard model prediction. Using the expected dependence of the cross section on the pole mass of the top quark (mt), the value of mt is found to be 170.6 ± 2.7 GeV.[Figure not available: see fulltext.].

The CMS, C., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2017). Measurement of the t t ¯ production cross section using events with one lepton and at least one jet in pp collisions at √s=13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2017(9) [10.1007/JHEP09(2017)051].

Measurement of the t t ¯ production cross section using events with one lepton and at least one jet in pp collisions at √s=13 TeV

Brianza L.;Brivio F.;Ciriolo V.;Dinardo M. E.;Fiorendi S.;Ghezzi A.;Govoni P.;Malberti M.;Manzoni R. A.;Paganoni M.;Pigazzini S.;Ragazzi S.;Tabarelli de Fatis T.;Lucchini M. T.;De Guio F.;
2017

Abstract

A measurement of the t t ¯ production cross section at s=13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 fb−1, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the accompanying jet multiplicity. From a likelihood fit to the invariant mass distribution of the isolated lepton and a jet identified as coming from the hadronization of a bottom quark, the cross section is measured to be σtt¯=888±2,(stat)−28+26(syst)±20(lumi) pb, in agreement with the standard model prediction. Using the expected dependence of the cross section on the pole mass of the top quark (mt), the value of mt is found to be 170.6 ± 2.7 GeV.[Figure not available: see fulltext.].
Articolo in rivista - Articolo scientifico
Hadron-Hadron scattering (experiments); Top physics;
Hadron-Hadron scattering (experiments); Top physics
English
The CMS, C., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2017). Measurement of the t t ¯ production cross section using events with one lepton and at least one jet in pp collisions at √s=13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2017(9) [10.1007/JHEP09(2017)051].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187648
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