The construction of gauge-links in arbitrary hard processes
By C. Bomhof, Piet J. Mulders, F. Pijlman. 2006
155 citations recorded by the source corpus.
Transverse momentum dependent parton distribution and fragmentation functions are described by hadronic matrix elements of bilocal products of field operators off the light-cone. These bilocal products contain gauge-links, as required by gauge-invariance. The gauge-links are path-ordered exponentials connecting the field operators along a certain integration path. This integration path is process-dependent, depending specifically on the short-distance partonic subprocess. In this paper we present the technical details needed in the calculation of the gauge-links, and a calculational scheme is provided to obtain the gauge invariant distribution and fragmentation correlators corresponding to a given partonic subprocess.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/85b06eb4c144660844d423eb79524c23a42dec26
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In Nuclear and High Energy Physics
Citations in the corpus
- k T factorization is violated in production of high-transverse-momentum particles in hadron-hadron collisions (2007, background): “[1] A. Bacchetta, C.J. Bomhof, P.J. Mulders and F. Pijlman, “Single spin asymmetries in hadron-hadron collisions”, Phys.”
- Semi-inclusive deep inelastic scattering at small transverse momentum (2006, background): “3.1 Light-cone coordinates 6 3.2 Calculation of the hadronic tensor 6 3.3 The quark-quark correlators 8 3.4 The quark-gluon-quark correlators 13”
- Semi-inclusive processes at low and high transverse momentum (2008, background): “Aspects specific to the case of fragmentation functions are discussed in [49,50].”