Next-to-leading order hard scattering using fully unintegrated parton distribution functions

T.C. Rogers

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    We calculate the next-to-leading order fully unintegrated hard scattering coefficient for unpolarized gluon-induced deep inelastic scattering using the logical framework of parton correlation functions developed in previous work. In our approach, exact four-momentum conservation is maintained throughout the calculation. Hence, all nonperturbative functions, like parton distribution functions, depend on all components of parton four-momentum. In contrast to the usual collinear factorization approach where the hard scattering coefficient involves generalized functions (such as Dirac δ functions), the fully unintegrated hard scattering coefficient is an ordinary function. Gluon-induced deep inelastic scattering provides a simple illustration of the application of the fully unintegrated factorization formalism with a nontrivial hard scattering coefficient, applied to a phenomenologically interesting case. Furthermore, the gluon-induced process allows for a parametrization of the fully unintegrated gluon distribution function. © 2008 The American Physical Society.
    Original languageEnglish
    Pages (from-to)074018
    Number of pages10
    JournalPhysical Review D
    Volume78
    Issue number7
    DOIs
    Publication statusPublished - 2008

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    Next-to-leading order hard scattering using fully unintegrated parton distribution functions

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