Pati-Salam SUSY GUT with Yukawa unification
Pati-Salam SUSY GUT with Yukawa unification
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Pati-Salam SUSY GUT 与汤川统一
DOI：
10.1103/physrevd.95.115025
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发表时间：
2017
影响因子：
5
通讯作者：
Zi
中科院分区：
文献类型：
--
作者：
Z. Poh;S. Raby;Zi
先前Raby及其学生提出的具有SO（10）或patii - salam （PS）规范对称的三族Yukawa统一超对称（SUSY）大统一理论的研究表明，该模型能够拟合低能量和暴胀观测值。然而，对低能观测值的拟合不是很好，特别是对于sin2β和上下夸克质量。本文表明，通过选择PS作为量规组并对汤川扇区进行修正，在保持模型其他品质的同时，低能量拟合得到了显著改善。其中，超对称性粒子中最轻的是质量为300-500 GeV的中性中微子，最轻的停止和底场质量为3-5 TeV， cp -奇数希格斯粒子质量为5-6 TeV，因此我们处于轻希格斯玻色子的解耦极限。此外，我们重新解释了ATLAS和CMS合作的胶子简化模型分析，发现我们模型中最严格的胶子质量界是Mg ~ ~ 1.9 TeV。目前的最佳拟合点与此界一致，胶子质量Mg≈1.9 TeV时，与之前模型的最佳拟合点χ2/dof=1.90相比，χ2/dof≈1.12。我们发现电子的电偶极矩、分支比BR（μ→γ）和轻子扇区的CP违逆角sinδ的预测结果与之前的结果相比有显著的影响。总之，我们不能排除这个模型，也不能给这次运行的大型强子对撞机所能达到的胶子质量设定一个上界，因为即使对于高达2.7 TeV的胶子质量，这个模型的χ2/dof也远低于2σ。好的一面是，这意味着这个模型仍然是可行的，我们可能在不久的将来发现低能量的超对称性粒子。
Previous studies of a three family Yukawa unified supersymmetric (SUSY) grand unified theory with SO(10) or Pati-Salam (PS) gauge symmetry proposed by Raby and students show that this model is able to fit low energy and inflation observables. However, the fit to low energy observables is not great especially for sin2β, and up and down quark masses. In this paper, we show that by choosing PS as the gauge group and modifying the Yukawa sector, the low energy fit improves significantly while other qualities of the model are maintained. In particular, the lightest SUSY particle is the neutralino with mass of order 300–500 GeV, the lightest stop and sbottom have mass of order 3–5 TeV, and the CP-odd Higgs mass is of order 5–6 TeV, so we are in the decoupling limit for the light Higgs boson. In addition, we reinterpret gluino simplified model analyses by the ATLAS and CMS collaborations and find that the most stringent gluino mass bound for our model is Mg˜∼1.9 TeV. The current best fit point, consistent with this bound, with gluino mass Mg˜=1.9 TeV has χ2/dof≈1.12, compared to the best fit point of the previous model with χ2/dof=1.90. We find that predictions for the electric dipole moment of the electron, the branching ratio BR(μ→eγ) and the CP violating angle in the lepton sector, sinδ, are affected significantly as compared to previous results. In summary, we are unable to rule out this model or place an upper bound on gluino mass accessible by this run of the LHC because the χ2/dof of this model is well below 2σ even for a gluino mass as high as 2.7 TeV. On the bright side, this means that this model is still viable and we might find low energy SUSY particles in the near future.
Pati-Salam 版本的亚临界混合膨胀
影响因子：
5
作者：
Charles Bryant;S. Raby
通讯作者：
S. Raby