Exclusive quarkonium production or decay in soft gluon factorization
High Energy Physics - Phenomenology
2020-05-18 v2
Abstract
In this paper, we study the application of the recently proposed soft gluon factorization (SGF) to exclusive quarkonium production or decay. We find that in the nonrelativistic QCD factorization framework there are too many nonperturbative parameters. Thanks to the factorization of kinematical physics from dynamical physics, the SGF significantly reduces the number of nonperturbative parameters. Therefore, the SGF can improve our predictive power of exclusive quarkonium production or decay. By applying to production at B-factories, our result is the closest one to data among all theoretical calculations.
Keywords
Cite
@article{arxiv.1911.05886,
title = {Exclusive quarkonium production or decay in soft gluon factorization},
author = {Rong Li and Yu Feng and Yan-Qing Ma},
journal= {arXiv preprint arXiv:1911.05886},
year = {2020}
}
Comments
13 pages, 1 figure, version published in JHEP