Double parton interactions in γ+3 jet events in pp̅ collisions at √s=1.96 TeV

Abazov, V. M. ; Mondal, N. K. ; et., al (2010) Double parton interactions in γ+3 jet events in pp̅ collisions at √s=1.96 TeV Physical Review D - Particles, Fields, Gravitation and Cosmology, 81 (5). 052012_1-052012_15. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v81/i5/e052012

Related URL: http://dx.doi.org/10.1103/PhysRevD.81.052012

Abstract

We have used a sample of γ+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 (fDP) in a single pp̅ collision at √s=1.96 TeV. The DP fraction and effective cross section (σeff), a process-independent scale parameter related to the parton density inside the nucleon, are measured in three intervals of the second (ordered in pΤ) jet transverse momentum pΤjet2 within the range 15≤pΤjet2≤30 GeV. In this range, fDP varies between 0.23≤fDP≤0.47, while σeff has the average value σeffave=16.4±0.3(stat)±2.3(syst) mb.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:92418
Deposited On:30 May 2012 13:55
Last Modified:30 May 2012 13:55

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