The top-antitop quark (t (t) over bar) production cross section is measured in proton-proton collisions at root s = 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.

Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Measurement of the t t̅ production cross section in the dilepton channel in pp collisions at √s=8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2014(2) [10.1007/JHEP02(2014)024].

Measurement of the t t̅ production cross section in the dilepton channel in pp collisions at √s=8 TeV

CIOCCI, MARIA AGNESE;MARTINI, LUCA;MESSINEO, ALBERTO MARIA;
2014-01-01

Abstract

The top-antitop quark (t (t) over bar) production cross section is measured in proton-proton collisions at root s = 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.
2014
Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Measurement of the t t̅ production cross section in the dilepton channel in pp collisions at √s=8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2014(2) [10.1007/JHEP02(2014)024].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1327951