D*Dπ form factor reexamined -: art. no. 037502

被引：102

作者：

Navarra, FS

Nielsen, M

Bracco, ME

机构：

[1] Univ Sao Paulo, Inst Fis, BR-05389970 Sao Paulo, Brazil

[2] Univ Estado Rio de Janeiro, Inst Fis, BR-20559900 Rio De Janeiro, Brazil

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.65.037502

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The D*Dpi form factor is evaluated in a QCD sum-rule calculation for both D and pi off-shell mesons. We study the Borel sum rule for the three-point function of one pseudoscalar, one axial, and one vector meson current. We find that the momentum dependence of the form factors is very different if the D or the pi meson is off shell, but they lead to the same coupling constant in the D*Dpi vertex.

引用

页数：4

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