Estimate for the X(3872)→γJ/ψ decay width

被引：136

作者：

Dong, Yubing ^{[1
,2
,3
]}

Faessler, Amand ^{[1
]}

Gutsche, Thomas ^{[1
]}

Lyubovitskij, Valery E. ^{[1
]}

机构：

[1] Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany

[2] Inst High Energy Phys, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.77.094013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The X(3872) resonance is considered as a hadronic molecule, a loosely bound state of charmed D-0 and D-*0 mesons, since its mass is very close to the (DD0)-D-*0 threshold. Assuming structure and quantum numbers of X(3872) as (D-0(D) over bar (*0)-D-*0(D) over bar (0))/root 2 and J(PC)=1(++), we calculate the X(3872)->gamma J/psi decay width using a phenomenological Lagrangian approach. We also estimate the contribution of an additional cc component in the X(3872) to this decay width, which is shown to be suppressed relative to the one of the molecular configuration.

引用

页数：8

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