Multiparton Interactions with an x-dependent Proton Size
High Energy Physics - Phenomenology
2015-05-27 v1
Abstract
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.
Cite
@article{arxiv.1101.5953,
title = {Multiparton Interactions with an x-dependent Proton Size},
author = {Richard Corke and Torbjörn Sjöstrand},
journal= {arXiv preprint arXiv:1101.5953},
year = {2015}
}