Twist decomposition of proton structure from BFKL and BK amplitudes
High Energy Physics - Phenomenology
2015-06-23 v1
Abstract
An analysis of twist composition of Balitsky-Kovchegov (BK) amplitude is performed in the double logarithmic limit. In this limit the BK evolution of color dipole -- proton scattering is equivalent to BFKL evolution which follows from vanishing of the Bartels vertex in the collinear limit. We perform twist decomposition of the BFKL/BK amplitude for proton structure functions and find compact analytic expressions that provide accurate approximations for higher twist amplitudes. The BFKL/BK higher twist amplitudes are much smaller than those following from eikonal saturation models.
Keywords
Cite
@article{arxiv.1411.7774,
title = {Twist decomposition of proton structure from BFKL and BK amplitudes},
author = {Leszek Motyka and Mariusz Sadzikowski},
journal= {arXiv preprint arXiv:1411.7774},
year = {2015}
}
Comments
10 pages, 5 figures