Baryon decays $J/\psi\rightarrow B\bar{B}$ within the QCD factorisation framework
High Energy Physics - Phenomenology
2022-03-02 v2
Abstract
We investigate decays into octet baryon-antibaryons pairs. The decay amplitudes are computed within the collinear QCD factorisation framework. The subleading amplitude, which describes the decay of longitudinally polarised charmonium, is computed using twist-4 three-quark distribution amplitudes. The obtained results are used for a qualitative analysis of the experimental data. It is found that the polarisation parameter can be described with an accuracy , which may indicate that the pQCD contribution dominates this observable.
Cite
@article{arxiv.2109.05847,
title = {Baryon decays $J/\psi\rightarrow B\bar{B}$ within the QCD factorisation framework},
author = {Nikolay Kivel},
journal= {arXiv preprint arXiv:2109.05847},
year = {2022}
}
Comments
19 pages, 3 tables, few typos are corrected