Constraining double-parton correlations and interferences

Tomas Kasemets and Piet J. Mulders
Phys. Rev. D 91, 014015 – Published 13 January 2015

Abstract

Double-parton scattering (DPS) has become very relevant as a background to interesting analyses performed by the experiments at the LHC. It encodes knowledge of correlations between the proton constituents not accessible in single-parton scattering. Within perturbative QCD DPS is described in terms of partonic subprocesses and double-parton distributions (DPDs). There exists a large number of different DPDs describing the different possible states of two partons inside a proton. They include correlations between the two partons and interferences between the two hard subprocesses. Taking the probability interpretation of the DPDs as a starting point, we derive limits on the interference DPDs and thereby constrain the size of correlations between two partons inside an unpolarized proton.

  • Figure
  • Received 17 November 2014

DOI:https://doi.org/10.1103/PhysRevD.91.014015

© 2015 American Physical Society

Authors & Affiliations

Tomas Kasemets* and Piet J. Mulders

  • Nikhef and Department of Physics and Astronomy, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands

  • *kasemets@nikhef.nl
  • mulders@few.vu.nl

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Issue

Vol. 91, Iss. 1 — 1 January 2015

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