The top-antitop quark (ttÌ) production cross section is measured in proton-proton collisions at âs = 8 TeV with the CMS experiment at the LHC, using a data sample corresponding to an integrated luminosity of 5.3 fb-1. The measurement is performed by analysing events with a pair of electrons or muons, or one electron and one muon, and at least two jets, one of which is identified as originating from hadronisation of a bottom quark. The measured cross section is 239 ± 2 (stat.) ± 11 (syst.) ± 6 (lum.) pb, for an assumed top-quark mass of 172.5 GeV, in agreement with the prediction of the standard model.
Measurement of the ttÌ production cross section in the dilepton channel in pp collisions at âs = 8 TeV
S. Albergo;G. Cappello;M. Chiorboli;S. Costa;F. Giordano;R. Potenza;A. Tricomi;C. Tuve
2014-01-01
Abstract
The top-antitop quark (ttÌ) production cross section is measured in proton-proton collisions at âs = 8 TeV with the CMS experiment at the LHC, using a data sample corresponding to an integrated luminosity of 5.3 fb-1. The measurement is performed by analysing events with a pair of electrons or muons, or one electron and one muon, and at least two jets, one of which is identified as originating from hadronisation of a bottom quark. The measured cross section is 239 ± 2 (stat.) ± 11 (syst.) ± 6 (lum.) pb, for an assumed top-quark mass of 172.5 GeV, in agreement with the prediction of the standard model.File in questo prodotto:
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