Azimuthal asymmetries in semi-inclusive leptoproduction

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    We point out the role of intrinsic transverse momentum of partons in the study of azimuthal asymmetries in deep-inelastic 1-particle inclusive leptoproduction. Leading asymmetries often appear in combination with spin asymmetries. This leads not only to transverse momentum dependence in the parton distribution functions, but also to functions beyond those known from inclusive deep-inelastic scattering (DIS). We use Lorentz invariance and the QCD equations of motion to study the evolution of functions that appear at leading (zeroth) order in a 1 / Q expansion in azimuthal asymmetries. This includes the evolution equation of the Collins fragmentation function. The moments of these functions are matrix elements of known twist-2 and twist-3 operators. We give the evolution in the large N
    Original languageEnglish
    Pages (from-to)801-809
    JournalJournal of Physics G. Nuclear and Particle Physics
    Volume28
    DOIs
    Publication statusPublished - 2002

    Bibliographical note

    Azimuthal asymmetries in semi-inclusive leptoproduction

    Fingerprint

    Dive into the research topics of 'Azimuthal asymmetries in semi-inclusive leptoproduction'. Together they form a unique fingerprint.

    Cite this