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arXiv · 1101.5953

Multiparton Interactions with an x-dependent Proton Size

Richard Corke·Torbjörn Sjöstrand
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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.

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Richard Corke, Torbjörn Sjöstrand. 2011-01-31. Multiparton Interactions with an x-dependent Proton Size. https://doi.org/10.1007/jhep05(2011)009

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