Measurement of the ttbar production cross section using events with one lepton and at least one jet in pp collisions at sqrt(s)=13 TeV

Abstract : A measurement of the ttbar production cross section at sqrt(s)=13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.3 inverse femtobarns, 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 sigma(ttbar)= 835 +/- 3 (stat) +/- 23 (syst) +/- 23 (lum) pb, in agreement with the standard model prediction. Using the expected dependence of the cross section on the pole mass of the top quark (m[t]), the value of m[t] is found to be 172.7+2.4-2.7 GeV.
Type de document :
Pré-publication, Document de travail
Submitted to JHEP. All figures and tables can be found at http://cms-results.web.cern.ch/cms-resu.. 2017
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http://hal.in2p3.fr/in2p3-01449500
Contributeur : Sylvie Flores <>
Soumis le : lundi 30 janvier 2017 - 15:01:46
Dernière modification le : mardi 16 janvier 2018 - 16:15:52

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  • HAL Id : in2p3-01449500, version 1
  • ARXIV : 1701.06228

Citation

A.M. Sirunyan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurement of the ttbar production cross section using events with one lepton and at least one jet in pp collisions at sqrt(s)=13 TeV. Submitted to JHEP. All figures and tables can be found at http://cms-results.web.cern.ch/cms-resu.. 2017. 〈in2p3-01449500〉

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