Measurement of the tt̄ production cross section in pp collisions at √s=7 TeV using the kinematic properties of events with leptons and jets

The CMS collaboration

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

A measurement of the tt̄ production cross section in proton-proton collisions at a centre-of-mass energy of 7 TeV has been performed at the LHC with the CMS detector. The analysis uses a data sample corresponding to an integrated luminosity of 36 pb-1and is based on the reconstruction of the final state with one isolated, high transverse-momentum electron or muon and three or more hadronic jets. The kinematic properties of the events are used to separate the tt̄ signal from W+jets and QCD multijet background events. The measured cross section is 173+39 -32(stat. + syst.) pb, consistent with standard model expectations.

Lingua originaleInglese
Numero di articolo1721
pagine (da-a)1-27
Numero di pagine27
RivistaEuropean Physical Journal C
Volume71
Numero di pubblicazione9
DOI
Stato di pubblicazionePubblicato - 1 lug 2011

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