The top-antitop quark (tt̄) production cross section is measured in proton-proton collisions at √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., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Measurement of the tt̄ production cross section in the dilepton channel in pp collisions at √s = 8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 114(2) [10.1007/JHEP02(2014)024].

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

A. Benaglia;M. E. Dinardo;R. Gerosa;A. Ghezzi;P. Govoni;M. T. Lucchini;L. Moroni;M. Paganoni;S. Ragazzi;T. Tabarelli de Fatis;A. Branca;G. Ortona;F. De Guio;A. Massironi;
2014

Abstract

The top-antitop quark (tt̄) production cross section is measured in proton-proton collisions at √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.
Articolo in rivista - Articolo scientifico
Hadron-Hadron Scattering; Top physics;
English
2014
114
2
24
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Measurement of the tt̄ production cross section in the dilepton channel in pp collisions at √s = 8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 114(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/10281/424060
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