Multiparton Interactions with an x-dependent Proton Size

Details Multiparton Interactions with an x-dependent Proton Size Multiparton Interactions with an x-dependent Proton Size

2011-01-31

arxiv.org/abs/1101.5953v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

Theoretical arguments, supported by other indirect evidence, suggest that the wave function of high-x partons should be narrower than that of low-x ones. In this article, we present a modification to the variable impact parameter framework of Pythia 8 to model this effect. In particular, a Gaussian hadronic matter profile is introduced, with a width dependent on the x value of the constituent being probed. Results are compared against the default single- and double-Gaussian profiles, as well as an intermediate overlap function.

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