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arXiv 1503.04196hep-ph
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从准汤川统一得到的中微子暗物质和其他LHC预言

Neutralino Dark Matter and Other LHC Predictions from Quasi Yukawa Unification

Qaisar Shafi, Sukru Hanif Tanyildizi, Cem Salih Un

摘要:

本文在基于规范对称性G=SU(4)_{c} \times SU(2)_{L} \times SU(2)_{R}的超对称模型框架下,探讨了t-b-tau准汤川统一的暗物质和大强子对撞机的意义.通过无量纲参数C(|C| <~ 0.2)量化与精确Yukawa统一的偏差,使得M_GUT处的Yukawa耦合关系为y_t:y_b:y_tau=| 1+C| : |1-C| : |1+3C|.与以前研究的普适性的Gaugino质量不同,我们考虑了M_GUT处的非普适性的Gaugino质量,它与规范对称性G相容。我们执行两个独立的扫描的基本参数空间,其中一个采用ISAJET,而另一个使用SoftSusy接口与SuperIso。这些扫描揭示了在参数空间中的定性相似的允许区域,并产生了各种中性伴子暗物质的情况下,与观测一致。这些包括Stau和chargino coannihilation的情况下,A-共振的情况下,以及Higgsino暗物质解决方案,这是更容易探测直接检测搜索。发现胶子质量<~ 4.2TeV,终止质量>~ 2 TeV,而前两族方子和slepton的质量分别为4-5 TeV和3 TeV。

英文摘要:

We explore the dark matter and LHC implications of t-b-tau quasi Yukawa unification in the framework of supersymmetric models based on the gauge symmetry G=SU(4)_{c}\times SU(2)_{L}\times SU(2)_{R}. The deviation from exact Yukawa unification is quantified by a dimensionless parameter C (|C| <~ 0.2), such that the Yukawa couplings at M_GUT are related by y_t:y_b:y_tau=|1+C| : |1-C| : |1+3C|. In contrast to earlier studies which focused on universal gaugino masses, we consider non-universal gaugino masses at M_GUT that are compatible with the gauge symmetry G. We perform two independent scans of the fundamental parameter space, one of which employs ISAJET, while the other uses SoftSusy interfaced with SuperIso. These scans reveal qualitatively similar allowed regions in the parameter space, and yield a variety of neutralino dark matter scenarios consistent with the observations. These include stau and chargino coannihilation scenarios, the A-resonance scenario, as well as Higgsino dark matter solution which is more readily probed by direct detection searches. The gluino mass is found to be <~ 4.2 TeV, the stop mass is >~ 2 TeV, while the first two family squarks and sleptons are of order 4-5 TeV and 3 TeV respectively.

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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