Elements of a theory for multiparton interactions in QCD

Details Elements of a theory for multiparton interactions in QCD Elements of a theory for multiparton interactions in QCD

2011-11-03

arxiv.org/abs/1111.0910v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

144 pages, 42 figures. v2: small corrections and clarifications. Detailed list of changes at end of preprint

Scientific paper

We perform a detailed investigation of multiple hard interactions in hadron-hadron collisions. We discuss the space-time, spin and color structure of multiple interactions, classify different contributions according to their power behavior and provide several elements required for establishing all-order factorization. This also allows us to analyze the structure of Sudakov logarithms in double hard scattering. We show how multiparton distributions can be constrained by lattice calculations, by connecting them with generalized parton distributions, and by calculating their behavior at large transverse parton momenta.

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