Large CP violation in Bs meson mixing with EDM constraint in supersymmetry
Large CP violation in Bs meson mixing with EDM constraint in supersymmetry
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DOI：
10.1007/jhep03(2011)130
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发表时间：
2010-12
影响因子：
5.4
通讯作者：
Motoi Endo;N. Yokozaki
中科院分区：
文献类型：
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作者：
Motoi Endo;N. Yokozaki
受最近测量的同号双μ子电荷不对称性的启发，我们研究了超对称混合中的反常CP破坏。我们表明，当胶子图占主导地位的超对称性的贡献，这是很难实现的largemixing相的电偶极矩的限制下，除非取消。这个限制可以通过假设超粒子解耦来放松。我们发现，有可能实现大的CP不对称性，并且B s→ μ+ μ−的分支比变得相当大。
Motivated by the recent measurement of the like-sign dimuon charge asymmetry, we investigate anomalous CP violation in themixing within the supersymmetry. We show that when gluino diagrams dominate supersymmetry contributions, it is very difficult to realize a largemixing phase under the constraint from electric dipole moments barring cancellations. This constraint can be relaxed by supposing superparticles decoupled. We find that it is possible to achieve the large CP asymmetry, and the branching ratio of B s→ μ+ μ− becomes sizable.