Supersymmetric contribution to B → ρK and B → πK* decays in SCET

被引：2
|
作者：
Faisel, Gaber [1 ,2 ,3 ]
Delepine, David [4 ]
Shalaby, M. [5 ]
机构：
[1] Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan
[2] Natl Cent Univ, Ctr Math & Theoret Phys, Chungli 32054, Taiwan
[3] Modern Univ Informat & Technol, Egyptian Ctr Theoret Phys, Cairo, Egypt
[4] Univ Guanajuato, Dept Fis, DCI, Guanajuato 37150, Mexico
[5] Ain Shams Univ, Fac Sci, Cairo 11566, Egypt
来源：
PHYSICS LETTERS B | 2011年 / 705卷 / 04期
关键词：
QCD FACTORIZATION; SPECTATOR SCATTERING; PERTURBATIVE QCD; EPSILON'/EPSILON; AMPLITUDES; MSSM; NLO;
D O I：
10.1016/j.physletb.2011.10.041
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We analyze the supersymmetric contributions to the direct CP asymmetries of the decays B -> pi K* and B -> rho K within Soft Collinear Effective Theory. We extend the Standard Model analysis of these asymmetries to include the next leading order QCD corrections. We find that, even with QCD correction, the Standard Model predictions cannot accommodate the direct CP asymmetries in these decay modes. Using Mass Insertion Approximation (MIA), we show that non-minimal flavor SUSY contributions mediated by gluino exchange can enhance the CP asymmetries significantly and thus can accommodate the experimental results. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：361 / 368
页数：8
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