On the kinematic constraint in BFKL near threshold region
High Energy Physics - Phenomenology
2022-04-04 v1
Abstract
We introduce a modified Balitskii-Fadin-Kuraev-Lipatov (BFKL) equation with the rapidity veto that originates from external kinematic constraint. Though it is a formally sub-leading power contribution, such kinematic effect becomes very important especially in the threshold region, where there is no sufficient phase space for the small evolution to be fully developed. We also investigate the phenomenological consequences of the kinematic constraint BFKL equation in the forward particle production processes in pp and eA collisions. It is shown that particle yield at large transverse momentum is significantly suppressed in the threshold region.
Keywords
Cite
@article{arxiv.2204.00262,
title = {On the kinematic constraint in BFKL near threshold region},
author = {Hao-yu Liu and Xiao-hui Liu and Yu Shi and Du-xin Zheng and Jian Zhou},
journal= {arXiv preprint arXiv:2204.00262},
year = {2022}
}
Comments
14 pages, 6 figures