Two-loop current-current operator contribution to the non-leptonic QCD penguin amplitude

被引：35
作者：
Bell, G. [1 ]
Beneke, M. [2 ]
Huber, T. [3 ]
Li, Xin-Qiang [4 ,5 ,6 ]
机构：
[1] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England
[2] Tech Univ Munich, Phys Dept T31, D-85748 Garching, Germany
[3] Univ Siegen, Nat Wissensch Tech Fak, Theoret Phys 1, D-57068 Siegen, Germany
[4] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China
[5] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China
[6] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
来源：
PHYSICS LETTERS B | 2015年 / 750卷
关键词：
NNLO VERTEX CORRECTIONS; B-DECAYS; SPECTATOR SCATTERING; PI-PI; FACTORIZATION; NLO;
D O I：
10.1016/j.physletb.2015.09.037
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The computation of direct CF asymmetries in charmless B decays at next-to-next-to-leading order (NNLO) in QCD is of interest to ascertain the short-distance contribution. Here we compute the two-loop penguin contractions of the current-current operators Q(1,2) and provide a first estimate of NNLO CP asymmetries in penguin-dominated b -> s transitions. (C) 2015 The Authors. Published by Elsevier B.V.
引用
收藏
页码：348 / 355
页数：8
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