B → ππ decay from QCD light-cone sum rules

被引：0

作者：

Urban, P

机构：

[1] Univ Karlsruhe, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany

[2] Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

来源：

ACTA PHYSICA POLONICA B | 2003年 / 34卷 / 09期

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the contribution to the B --> pipi decay from gluonic penguin operator, O-8g, including both hard O(alpha(s)) and soft gluon effects. As , but are numerically of the expected, the soft effects enter at order 1/m(b)(2) same order as the hard ones, indicating the necessity of taking them into account.

引用

页码：4411 / 4417

页数：7

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