Study of B(B)over-bar*/D(D)over-bar* bound states in a Bethe-Salpeter approach

被引：56
作者：
He, Jun [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Modern Phys, Div Theoret Phys, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China
[3] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
来源：
PHYSICAL REVIEW D | 2014年 / 90卷 / 07期
基金：
中国国家自然科学基金;
关键词：
MOLECULAR-STATES; MESONS;
D O I：
10.1103/PhysRevD.90.076008
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this work the B (B) over bar*/D (D) over bar* system is studied in the Bethe-Salpeter approach with quasipotential approximation. In our calculation both direct and cross diagrams are included in the one-boson-exchange potential. The numerical results indicate the existence of an isoscalar bound state D (D) over bar* with J(PC) = 1(++) which may be related to the X(3872). In the isovector sector, no bound state is produced from the interactions of D (D) over bar* and B (B) over bar*, which suggests the molecular state explanations for Z(b)(10610) and Z(c)(3900) are excluded.
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页数：6
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