Zcs states from the D*s over bar D* and J=ψK* coupled channels: Signal in B+ → J=ψφK+ decay

被引：12
|
作者：
Ikeno, Natsumi [1 ]
Molina, Raquel [2 ]
Oset, Eulogio [2 ]
机构：
[1] Tottori Univ, Dept Agr Life & Environm Sci, Tottori 6808551, Japan
[2] Univ Valencia, Dept Fis Teor, Ctr Mixto, CSIC,Inst Invest Paterna, Aptdo 22085, Valencia 46071, Spain
来源：
PHYSICAL REVIEW D | 2022年 / 105卷 / 01期
关键词：
EFFECTIVE CHIRAL LAGRANGIANS; HIDDEN;
D O I：
10.1103/PhysRevD.105.014012
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the D*s over bar D* system in connection with the J=psi K* in coupled channels and observe that, within reasonable values of the cutoff used to regularize the loops, the system does not develop a bound state. However, the JP = 2+ channel has enough attraction to create a strong cusp structure that shows up in the J=psi K+ invariant mass distribution in the B+ -> J=psi phi K+ decay at the D*s over bar D* threshold. Such structure is results should stimulate further measurements around this region, given the fact that cusp effects provide as valuable information on hadron dynamics as resonances themselves.
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页数：13
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