Measurement of the t(t)over-bar production cross section in the dilepton channel in pp collisions at root s=8 TeV
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Undergraduate course
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Springer
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Article
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Acesso aberto
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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.
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Keywords
Hadron-Hadron Scattering, Top physics
Language
English
Citation
Journal Of High Energy Physics. New York: Springer, n. 2, 31 p., 2014.
