Double parton interactions in gamma+3 jet events in ppbar collisions at sqrt{s}=1.96 TeV

Open Access
Authors
  • V.M. Abazov
  • [Unknown] et al.
  • L.S. Ancu
  • S.J. de Jong
  • F. Filthaut
  • C.F. Galea
  • J.G. Hegeman
  • P. Houben
  • M.M. Meijer
  • P. Svoisky
  • P.J. van den Berg
Publication date 2010
Journal Physical Review D. Particles, Fields, Gravitation, and Cosmology
Volume | Issue number 81 | 5
Pages (from-to) 052012
Number of pages 15
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF)
Abstract
We have used a sample of gamma + 3 jets events collected by the D0 experiment with an integrated luminosity of about 1 fb(-1) to determine the fraction of events with double parton scattering (f(DP)) in a single p (p) over bar collision at root s = 1.96 TeV. The DP fraction and effective cross section (sigma(eff)), a process-independent scale parameter related to the parton density inside the nucleon, are measured in three intervals of the second (ordered in p(T)) jet transverse momentum p(T)(jet2) within the range 15 <= p(T)(jet2) <= 30 GeV. In this range, f(DP) varies between 0.23 <= f(DP) <= 0.47, while sigma(eff) has the average value sigma(ave)(eff) = 16.4 +/- 0.3(stat) +/- 2.3(syst) mb.
Document type Article
Language English
Published at https://doi.org/10.1103/PhysRevD.81.052012
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