CP-conserving unparticle phase effects on the unpolarized and polarized direct CP asymmetry in b → dl+l- transition

被引:8
|
作者
Bashiry, V. [1 ]
机构
[1] Cyprus Int Univ, Fac Engn, Mersin, Turkey
来源
PHYSICAL REVIEW D | 2008年 / 77卷 / 09期
关键词
D O I
10.1103/PhysRevD.77.096005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We examine the unparticle CP-conserving phase effects on the direct CP asymmetry for both polarized and unpolarized leptons in the inclusive b -> dl(+)l(-) transition, where the flavor-changing neutral currents are forbidden at tree level but are induced by one-loop penguin diagrams. The averaged polarized and unpolarized CP asymmetries depict strong dependency on the unparticle parameters. In particular, a sizable discrepancy corresponding to the standard model is achieved when the scale dimension value is 1 < d(U)< 2. We see that the unparticle stuff significantly enhances, suppresses, or changes the sign of the CP asymmetry depending on the definite value of the scaling dimension d(U). Especially, when d(U)similar to 1.1 the CP asymmetries vanish.
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页数:8
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