Zcs states from the Ds 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.

引用

页数：13

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

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