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Double parton interactions in photon + 3 jet and photon + b/c jet + 2 jet events in ppbar collisions at sqrt{s}=1.96 TeV

Abstract : 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 and corresponding to an integrated luminosity of about 8.7 fb^{-1}. The DP fractions and effective cross sections (sigma_eff) are measured for both event samples using the same kinematic selections. The measured DP fractions range from 0.21 to 0.17, with effective cross sections in the photon + 3 jet and photon + b/c jet + 2 jet samples of sigma_eff^incl = 12.7 +- 0.2 (stat) +- 1.3 (syst) mb and sigma_eff^HF = 14.6 +- 0.6 (stat) +- 3.2 (syst) mb, respectively.
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http://hal.in2p3.fr/in2p3-00943998
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, February 10, 2014 - 7:52:54 AM
Last modification on : Thursday, November 19, 2020 - 12:58:50 PM

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V.M. Abazov, G. Sajot, J. Stark, S. Greder, F. Miconi, et al.. Double parton interactions in photon + 3 jet and photon + b/c jet + 2 jet events in ppbar collisions at sqrt{s}=1.96 TeV. Physical Review D, American Physical Society, 2014, 89, pp.072006. ⟨10.1103/PhysRevD.89.072006⟩. ⟨in2p3-00943998⟩

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