Measurement of jet multiplicity distributions in tt‾ production in pp collisions at √s = 7TeV

CMS Collaboration

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton+jets decay channels using data corresponding to an integrated luminosity of 5.0 fb−1. Using a procedure to associate jets to decay products of the top quarks, the differential cross sectionof the tt‾ production is determined as a function of the additional jet multiplicity in the lepton+jets channel. Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum. The measurements are compared with predictions from perturbative quantum chromodynamics and no significant deviations are observed.
Original languageEnglish
Article number3014
Number of pages29
JournalEuropean Physical Journal C
Volume74
Issue number8
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Collisions
  • Proton–proton collisions
  • Jets

Cite this