Supersymmetric flavor models and the B→φKS anomaly -: art. no. 035017

被引:48
作者
Agashe, K
Carone, CD
机构
[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[2] Coll William & Mary, Dept Phys, Nucl & Particle Theory Grp, Williamsburg, VA 23187 USA
关键词
D O I
10.1103/PhysRevD.68.035017
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider the flavor structure of supersymmetric theories that can account for the deviation of the observed time-dependent CP asymmetry in B-->phiK(S) from the standard model prediction. Assuming simple flavor symmetries and effective field theory, we investigate possible correlations between sizable supersymmetric contributions to b-->s transitions and to flavor changing processes that are more tightly constrained. With relatively few assumptions, we determine the properties of minimal Yukawa and soft mass textures that are compatible with the desired supersymmetric flavor-changing effect and constraints. We then present explicit models that are designed (at least approximately) to realize these textures. In particular, we present an Abelian model based on a single U(1) factor and a non-trivial extra-dimensional topography that can explain the CP asymmetry in B-->phiK(S), while suppressing other supersymmetric flavor changing effects through a high degree of squark-quark alignment.
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页数:8
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