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

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Article number052012
<mark>Journal publication date</mark>31/03/2010
<mark>Journal</mark>Physical Review D
Issue number5
Number of pages15
Publication StatusPublished
<mark>Original language</mark>English


We have used a sample of photon+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 ppbar collision at sqrt{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 pT) jet transverse momentum pT_jet2 within the range 15

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© 2010 The American Physical Society 15 pages, 13 figures