The scale factor σeff, which characterizes double parton collisions in high energy hadron interactions, is a direct manifestation of the distribution of the interacting partons in transverse space, in such a way that different distributions give rise to different values of σeff in different double parton collision processes. We work out the value of the scale factor in a few reactions of interest, in a correlated model of the multiparton density of the proton recently proposed.
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Fabbro et al. (2001) studied this question.
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