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 Â± 2 (stat.) Â± 11 (syst.) Â± 6 (lum.) pb, for an assumed top-quark mass of 172.5 GeV, in agreement with the prediction of the standard model.
|Titolo:||Measurement of the ttÌ production cross section in the dilepton channel in pp collisions at âs = 8 TeV|
|Data di pubblicazione:||2014|
|Appare nelle tipologie:||1.1 Articolo in rivista|