论文编号:
第一作者所在部门:
论文题目:	Isospin breaking decays as a diagnosis of the hadronic molecular structure of the P-c(4457)
论文题目英文:
作者:	Guo, Feng-Kun; Jing, Hao-Jie; Meissner, Ulf-G; Sakai, Shuntaro
论文出处:
刊物名称:	PHYSICAL REVIEW D
年:	2019
卷:	99
期:	9
页:	91501
联系作者:
收录类别:
影响因子:
摘要:	The LHCb Collaboration announced the observation of three narrow structures consistent with hidden-charm pentaquark states. They are candidates of hadronic molecules formed of a pair of a charmed baryon and an anticharmed meson. Among them, the P-c(4457) mass is consistent with earlier predictions of a Sigma(c)(D) over bar* molecule with I = 1/2. We point out that if such a picture were true, one would have B(P-c(4457) -> J/psi Delta(+))/B(P-c(4457) -> J/psi p) at the level ranging from a few percent to about 30%. Such a large isospin breaking decay ratio is two to three orders of magnitude larger than that for normal hadron resonances. It is a unique feature of the Sigma(c)(D) over bar* molecular model, and can be checked by LHCb.
英文摘要:
外单位作者单位:
备注: