X(3872) as a molecular DD* state in a potential model

被引：97
|
作者：
Lee, Ian Woo [1 ]
Faessler, Amand [1 ]
Gutsche, Thomas [1 ]
Lyubovitskij, Valery E. [1 ]
机构：
[1] Univ Tubingen, Inst Theoret Phys, Kepler Ctr Astro & Particle Phys, D-72076 Tubingen, Germany
来源：
PHYSICAL REVIEW D | 2009年 / 80卷 / 09期
关键词：
HEAVY MESONS; DECAYS; CHARMONIUM;
D O I：
10.1103/PhysRevD.80.094005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We discuss the possibility that the X(3872) can be a hadronic DD* bound state in the framework of a potential model. The potential is generated by the exchange of pseudoscalar, scalar, and vector mesons resulting from the Lagrangian of heavy hadron chiral perturbation theory. The hadronic bound state configuration contains charged and neutral DD* components, while orbital S and D waves are included. Isospin symmetry breaking effects are fully taken into account. We show that binding in the DD* system with J(PC)=1(++) already exists for a reasonable value of the meson-exchange regularization parameter of Lambda similar to 1.2 GeV. We also explore the possibility of hadronic BB* bound states and show that binding can be achieved in the isoscalar limit for J(PC)=1(++) or 1(+-).
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收藏
页数：10
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