Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-05-27
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages with 4 figures
Scientific paper
10.1016/j.nuclphysa.2008.11.009
Within the framework of a generalized collinear factorization for multiple parton scattering in nuclear medium, twist-4 contributions to DIS off a large nucleus can be factorized as a convolution of hard parts and two-parton correlation functions. The hard parts for the quark scattering in the light-cone gauge correspond to interaction with a transverse (physical) gluon in the target, while they are given by the second derivative of the cross section with a longitudinal gluon in the covariant gauge. We provide a general proof of the equivalence of the hard parts in the light-cone and covariant gauge. We further demonstrate the equivalence in calculations of twist-4 contributions to semi-inclusive cross section of DIS in both lowest order and next leading order. Calculations of the nuclear transverse momentum broadening of the struck quark in the light-cone and covariant gauge are also discussed.
Liang Zuo-tang
Wang Xin-Nian
Zhou Jian
No associations
LandOfFree
Multiple parton scattering in nuclei: gauge invariance does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multiple parton scattering in nuclei: gauge invariance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple parton scattering in nuclei: gauge invariance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-272596