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
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页码：4411 / 4417
页数：7
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