Nonperturbative QCD contribution to the gluon-gluon-η′ vertex

被引：7

作者：

Ahmady, MR

Elias, V

Kou, E

机构：

[1] RIKEN, Inst Phys & Chem Res, LINAC Lab, Wako, Saitama 35101, Japan

[2] Univ Western Ontario, Dept Math Appl, London, ON N6A 5B7, Canada

[3] Univ Western Ontario, Dept Appl Math, London, ON N6A 5B7, Canada

[4] Ochanomizu Univ, Dept Phys, Bunkyo Ku, Tokyo 112, Japan

来源：

PHYSICAL REVIEW D | 1998年 / 57卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.57.7034

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the momentum dependence of the g*-g-eta' vertex form factor in the presence of the nonperturbative QCD vacuum condensate. The behavior of this form factor is crucial for, among Ether things, some proposed mechanisms devised to explain the large branching ratio for fast eta' production in charmless B decays observed by CLEO. We show that the leading momentum dependence of this vertex form factor is not altered when the contribution of the nonperturbative quark condensate is considered.

引用

页码：7034 / 7036

页数：3

共 11 条

[1]

AHMADY MR, HEPPH9710509

[2]

[Anonymous], HEPPH9707354

[3] Beta->eta'+X and the QCD anomaly [J].