Double parton interactions in gamma+3 jet events in p(p)over-bar collisions at root s=1.96 TeV
2010 (English)In: Physical Review D, ISSN 1550-7998, Vol. 81, no 5, 052012- p.Article in journal (Refereed) Published
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.
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:uu:diva-138737DOI: 10.1103/PhysRevD.81.052012ISI: 000276194200020OAI: oai:DiVA.org:uu-138737DiVA: diva2:379716