Central exclusive $\chi_{c,b}$ production at high energy colliders and gluon saturation approach
Abstract
The central exclusive production of and at the LHC, RHIC and Tevatron energies is analyzed, using the recent unintegrated parton distribution (UGDs) functions available in the package TMDlib. Comparison with data is performed, which tests the underlying assumptions basing the theoretical approach and it can constrain the unintegrated gluon distribution function at the small- region. Predictions for LHC energies using recent UGDs based in CCFM formalism are provided. It is explored the underlying uncertainties on this production as the choice for the unintegrated gluon distribution and factorization scale is done. Moreover, based on the parton saturation model for the gluon distribution, analytical expressions for the rapidity distributions are proposed. The prompt production of and is computed for the first time for LHC energies within the very same formalism used for production.
Keywords
Cite
@article{arxiv.2003.09552,
title = {Central exclusive $\chi_{c,b}$ production at high energy colliders and gluon saturation approach},
author = {F. Kopp and M. B. Gay Ducati and M. V. T. Machado},
journal= {arXiv preprint arXiv:2003.09552},
year = {2020}
}
Comments
9 pages, 8 figures and 2 tables. Final version to be published in Physics Letters B