Investigating possible decay modes of Y(4260) under D1(2420)(D)over-bar + c.c. molecular state ansatz

被引：37

作者：

Li, Gang ^{[1
]}

Liu, Xiao-Hai ^{[2
,3
]}

机构：

[1] Qufu Normal Univ, Dept Phys, Qufu 273165, Peoples R China

[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[3] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW D | 2013年 / 88卷 / 09期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

HEAVY MESONS; PUZZLE; RULE; RESONANCES; VIOLATION; PSI(3770); QUARKONIA; J/PSI;

D O I：

10.1103/PhysRevD.88.094008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

By assuming that Y(4260) is a D-1(D) over bar molecular state, we investigate some hidden-charm and charmed pair decay channels of Y(4260) via intermediate D-1(D) over bar meson loops with an effective Lagrangian approach. Through investigating the alpha dependence of branching ratios and ratios between different decay channels, we show that the intermediate D-1(D) over bar meson loops are crucial for driving these transitions of Y(4260) studied here. The coupled channel effects turn out to be more important in Y(4260) -> D*(D) over bar*, which can be tested in future experiments.

引用

页数：8