Implications of the LHCb evidence for charm CP violation

被引：89
|
作者：
Isidori, Gino [2 ,3 ]
Kamenik, Jernej F. [1 ,4 ]
Ligeti, Zoltan [5 ]
Perez, Gilad [2 ,6 ]
机构：
[1] J Stefan Inst, Ljubljana 1001, Slovenia
[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
[3] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[4] Univ Ljubljana, Dept Phys, Ljubljana 1000, Slovenia
[5] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[6] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel
来源：
PHYSICS LETTERS B | 2012年 / 711卷 / 01期
基金：
欧洲研究理事会;
关键词：
DECAYS;
D O I：
10.1016/j.physletb.2012.03.046
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The LHCb collaboration recently announced preliminary evidence for CP violation in D meson decays. We discuss this result in the context of the standard model (SM), as well as its extensions. In the absence of reliable methods to evaluate the hadronic matrix elements involved, we can only estimate qualitatively the magnitude of the non-SM tree level operators required to generate the observed central value. In the context of an effective theory, we list the operators that can give rise to the measured CP violation and investigate constraints on them from other processes. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：46 / 51
页数：6
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