Revisiting hidden-charm pentaquarks from QCD sum rules
High Energy Physics - Phenomenology
2019-03-19 v2 High Energy Physics - Experiment
Abstract
We revisit the hidden-charm pentaquark states and using the method of QCD sum rules by requiring the pole contribution to be larger than or around 30\% to better insure the one-pole parametrization to be valid. We find two mixing currents and our results suggest that the and can be identified as hidden-charm pentaquark states having and , respectively, while there still exist other possible spin-parity assignments, such as and , which needs to be clarified in further theoretical and experimental studies.
Keywords
Cite
@article{arxiv.1711.01545,
title = {Revisiting hidden-charm pentaquarks from QCD sum rules},
author = {Jia-Bing Xiang and Hua-Xing Chen and Wei Chen and Xiao-Bo Li and Xing-Qun Yao and Shi-Lin Zhu},
journal= {arXiv preprint arXiv:1711.01545},
year = {2019}
}
Comments
11 pages, 5 figures, published in CPC