Gauge link structure in quark-quark correlators in hard processes

C.J. Bomhof, P.J.G. Mulders, E. Pijlman

    Research output: Contribution to JournalArticleAcademicpeer-review

    122 Downloads (Pure)

    Abstract

    Distribution functions in hard processes can be described by quark-quark correlators, nonlocal matrix elements of quark fields. Color gauge invariance requires inclusion of appropriate gauge links in these correlators. For transverse momentum dependent distribution functions, in particular important for describing T-odd effects in hard processes, we find that new link structures containing loops can appear in Abelian and non-Abelian theories. In transverse moments, e.g., measured in azimuthal asymmetries, these loops may enhance the contribution of gluonic poles. Some explicit results for the link structure are given in high-energy leptoproduction and hadron-hadron scattering. © 2004 Elsevier B.V.
    Original languageEnglish
    Pages (from-to)277-286
    JournalPhysics Letters B
    Volume596
    Issue number3-4
    DOIs
    Publication statusPublished - 2004

    Bibliographical note

    Times Cited: 47

    Fingerprint

    Dive into the research topics of 'Gauge link structure in quark-quark correlators in hard processes'. Together they form a unique fingerprint.

    Cite this