Measurement of jet multiplicity distributions in tt production in pp collisions at √s = 7TeV
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 7TeV 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 5.0fb−1. Using a procedure to associate jets to decay products of the top quarks, the differential cross section of 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. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000090573Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
The European Physical Journal CBand
Seiten / Artikelnummer
Verlag
SpringerOrganisationseinheit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
Zugehörige Publikationen und Daten
Is referenced by: https://doi.org/10.3929/ethz-b-000102304