Diabatic description of charmoniumlike mesons II: mass corrections and strong decay widths
Abstract
From a diabatic bound state approach to and charmoniumlike resonances below GeV, formulated in terms of and closed meson-meson channels, we calculate mass shifts and widths due to open meson-meson channels. This calculation does not involve any new free parameter, so comparison of our predictions with existing data provides a direct test of our approach. Further mass corrections are also estimated and good agreement with the measured masses comes out. As for the calculated widths, overall reasonable, they point out to the need of some refinement of our current bound state approximation for an accurate description of data. These results give additional support to the diabatic approach in QCD as an adequate framework for a complete unified description of conventional and unconventional charmoniumlike resonances. In this respect, the experimental discovery of a predicted resonance with a mass around GeV would be of special relevance.
Keywords
Cite
@article{arxiv.2101.04636,
title = {Diabatic description of charmoniumlike mesons II: mass corrections and strong decay widths},
author = {R. Bruschini and P. González},
journal= {arXiv preprint arXiv:2101.04636},
year = {2021}
}
Comments
9 pages, 5 tables; v2: new appendix, extended Introduction and Results, additional references, other small additions and corrections