Double Parton Interactions in $\gamma+3$ Jet and $\gamma+b/cjet+2$ Jet Events in $p \bar p$ Collisions at $\sqrt s=1.96$ TeV

The D0 collaboration
Phys.Rev.D 89 (2014) 072006, 2014.

Abstract (data abstract)
Fermilab-Tevatron. We determine the fraction of events with double parton (DP) scattering in a single ppbar collision at sqrt(s) = 1.96 TeV in samples of photon + 3 jet and photon + b/c jet + 2 jet events collected with the D0 detector after it was upgraded in 2006 and corresponding to an integrated luminosity of about 8.7 fb^{-1}. The photon + 3 jet and photon + b/c jet + 2 jet event samples are referred to as inclusive (INCL) and heavy flavour (HF) samples respectively. The effective cross sections, SIGEFF, are presented for both event samples using the same kinematic selections.

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