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Double Parton Interactions in $\gamma+3$ Jet Events in  $p\bar{p}$ Collisions $\sqrt{s}=1.96$ TeV
Stockholm University, Faculty of Science, Department of Physics. (Elementarpartikelfysik)
2010 (English)In: Physical Review D. Particles and fields, ISSN 0556-2821, E-ISSN 1089-4918, Vol. 81, no 5, 052012- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2010. Vol. 81, no 5, 052012- p.
National Category
Subatomic Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:su:diva-41258DOI: 10.1103/PhysRevD.81.052012ISI: 000276194200020OAI: oai:DiVA.org:su-41258DiVA: diva2:329239
Projects
D0
Note
Publikationen har totalt 468 författare, V. Abazov et al.Available from: 2010-07-08 Created: 2010-07-08 Last updated: 2017-12-12Bibliographically approved

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