Double Charmonia Production in Exclusive $Z$ Boson Decays
High Energy Physics - Phenomenology
2018-05-23 v1
Abstract
This article is devoted to systematic analysis of double charmonium production in exclusive boson decays in the framework of Nonrelativistic Quantum Chromodynamic (NRQCD) and leading twist light-cone (LC) models. Theoretical predictions for branching fractions of all considered decays are presented. According to obtained results in the case of allowed by helicity suppression rule processes the effect of internal quark motion increases the branching fraction by a factor 1.5, while for forbidden reactions LC predictions are strictly zero, while NRQCD ones are significantly smaller than for allowed.
Keywords
Cite
@article{arxiv.1712.03108,
title = {Double Charmonia Production in Exclusive $Z$ Boson Decays},
author = {A. K. Likhoded and A. V. Luchinsky},
journal= {arXiv preprint arXiv:1712.03108},
year = {2018}
}
Comments
10 pages, 2 figures, 2 tables. arXiv admin note: substantial text overlap with arXiv:1706.04091