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(Formula presented.) 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(Formula presented.). Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the (Formula presented.) 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 language | English |
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Article number | 3014 |
Pages (from-to) | 1-29 |
Number of pages | 29 |
Journal | European Physical Journal C |
Volume | 74 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1 Aug 2014 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2014, The Author(s).