First lattice QCD estimate of the gD*Dπ coupling -: art. no. 074504

被引：48

作者：

Abada, A

Becirevic, D

Boucaud, P

Herdoiza, G

Leroy, JP

Le Yaouanc, A

Pène, O

Rodríguez-Quintero, J

机构：

[1] Univ Paris 11, Phys Theor Lab, Ctr Orsay, F-91405 Orsay, France

[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[3] Univ Huelva, EPS La Rabida, Dept Fis Aplicada, Palos De La Fra 21819, Spain

来源：

PHYSICAL REVIEW D | 2002年 / 66卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.66.074504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of the first lattice QCD study of the strong coupling g(D*Dpi). From our simulations in the quenched approximation, we obtain g(D*Dpi)=18.8+/-2.3(-2.0)(+1.1) and (g) over cap (c)=0.67+/-0.08(-0.06)(+0.04). Whereas previous theoretical studies gave different predictions, our result favors a large value for (g) over cap (c). It agrees very well with the recent experimental value by CLEO. (g) over cap varies very little with the heavy mass and we find in the infinite mass limit (g) over cap (infinity)=0.69(18).

引用

页数：10

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