We use a sample of diphoton+dijet events to measure the effective cross section of double parton interactions, which characterizes the area containing the interacting partons in proton-antiproton collisions, and find it to be σeff=19.3±1.4(stat)±7.8(syst) mb. The sample was collected by the D0 detector at the Fermilab Tevatron collider in p¯p collisions at √s=1.96 TeV and corresponds to an integrated luminosity of 8.7 fb−1.
Abazov, V. M., Abbott, B., Acharya, B. S., Adams, M., Adams, T., Agnew, J. P., ... & Atkins, S. (2016). Study of double parton interactions in diphoton+ dijet events in p p¯ collisions at s= 1.96 TeV. Physical Review D, 93(5), 052008.
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