Highenergy scattering in QCD and cross singularities of Wilson loops
Abstract
We consider elastic quarkquark scattering at high energy and fixed transferred momentum. Performing factorization of softgluon exchanges into the Wilsonline expectation value we find that there is onetoone correspondence between highenergy asymptotics in QCD and renormalization properties of the socalled cross singularities of the Wilson lines. Using this relation we show that the asymptotic behavior of the quarkquark scattering amplitude is controlled by a 2 × 2 matrix of the cross anomalous dimensions. We evaluate the matrix of the cross anomalous dimension to twoloop order and study the properties of the obtained expressions to higher loop order.
 Publication:

Nuclear Physics B
 Pub Date:
 February 1995
 DOI:
 10.1016/05503213(94)00553Q
 arXiv:
 arXiv:hepph/9409446
 Bibcode:
 1995NuPhB.437..127K
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 LaTeX style, 31 pages, 5 figures (included), ITPSB9442