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arXiv 1012.2435hep-ph
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超对称Q6模型中暗物质、EDM和B0混合CP破坏的三角关系

Triangle Relation of Dark Matter, EDM and CP Violation in B0 Mixing in a Supersymmetric Q6 Model

Yoshiyuki Kaburaki, Kazuhiro Konya, Jisuke Kubo, Alexander Lenz

摘要:

我们考虑了最近提出的基于离散Q6族群的超对称模型,由于族群的对称性和自发的CP破坏,电偶极矩(EDM)、神经介子混合中的CP破坏和暗物质质量m_DM密切相关.该三角关系由mu参数的大小控制。环路效应对软质量插入有很大的贡献,我们发现该模型在B 0系统中允许很大的CP破坏。它的大小与最近在D 0和CDF的实验观测相当,并且在最初几年可以在LHCb观测到。如果参数空间受到中子EDM、变味中性流和CP破坏的约束,那么三角关系在暗物质候选者上产生以下界限:0.12 TeV < m_DM < 0.33 TeV,这在LHC上是可直接观测的。我们还计算了a_sl^s - a_sl^d,这是在LHCb上可观测到的,其中a_sl^s(d)是B_s(d)系统的半轻子CP不对称性。

英文摘要:

We consider a recently proposed supersymmetric model based on the discrete Q6 family group.Because of the family symmetry and spontaneous CP violation the electric dipole moment (EDM), the CP violation in the mixing of the neural mesons and the dark matter mass m_DM are closely related. This triangle relation is controlled by the size of the mu parameters. Loop effects can give rise to large contributions to the soft mass insertions, and we find that the model allows a large CP violation in the B0 system. Its size is comparable with the recent experimental observations at D0 and CDF, and it could be observed at LHCb in the first years. If the parameter space is constrained by the neutron EDM, and flavor changing neutral currents and CP violations in K0 as well as B0 mixing, the triangle relation yields the following bound on the dark matter candidate: 0.12 TeV < m_DM < 0.33 TeV, which is directly observable at LHC. We also compute a_sl^s - a_sl^d, which is observable at LHCb, where a_sl^s(d) is the semi-leptonic CP asymmetryfor the B_s(d) system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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