We propose an $SO(10)$ supersymmetric grand unified theory (SUSY GUT), where the $SO(10)$ gauge symmetry breaks down to $SU(3)_c \times SU(2)_L \times U(1)_Y\times U(1)_{X}$ at the GUT scale and $U(1)_X$ is radiatively broken at the SUSY-braking scale. In order to achieve the observed Higgs mass around $126$ GeV and also to satisfy constraints on flavor- and/or CP-violating processes, we assume that the SUSY-breaking scale is $O(100)$ TeV, so that the $U(1)_X$ breaking scale is also $O(100)$ TeV. One big issue in the SO(10) GUTs is how to realize realistic Yukawa couplings. In our model, not only ${\bf 16}$-dimensional but also ${\bf 10}$-dimensional matter fields are introduced to predict the observed fermion masses and mixings. The Standard-Model quarks and leptons are linear combinations of the ${\bf 16}$- and ${\bf 10}$-dimensional fields so that the $U(1)_{X}$ gauge interaction may be flavor-violating. We investigate the current constraints on the flavor-violating $Z'$ interaction from the flavor physics and discuss prospects for future experiments.
While the observation of nucleon decay would be a smoking gun of Grand Unified Theories (GUTs) in general, the ratios between the decay rates of the various channels carry rich information about the specific GUT model realization. To investigate this fingerprint of GUT models in the context of supersymmetric (SUSY) GUTs, we present the software tool \texttt{SusyTCProton}, which is an extension of the module \texttt{SusyTC} to be used with the \texttt{REAP} package. It allows to calculate nucleon decay rates from the relevant dimension five GUT operators specified at the GUT scale, including th…
Testable SUSY spectra from GUTs at a 100 TeV pp collider
大统一理论（GUT）是更基本的基本粒子理论的有吸引力的候选者。它们不仅可以统一标准模型（SM）的相互作用，而且还可以统一不同类型的SM费米子，特别是夸克和轻子，在大统一规范群的联合表示。我们讨论了如何比较预测超对称大统一理论模型与夸克和带电轻子质量的实验结果导致超对称谱的约束。我们展示了一个例子，从最近的分析中，所得到的超伙伴质量，发现刚刚超出了大型强子对撞机运行1的范围，但完全在100 TeV pp对撞机的范围内。
Bottom-Tau Unification in SUSY SU(5) GUT and Constraints from b to s gamma and Muon g-2
在最小超引力框架下，分析了超对称SU（5）大统一理论中的底τ汤川统一，其中参数空间受到Br（b to s gamma）和μ介子g-2等实验约束的限制.如果超粒子质量相对较重且希格西诺质量参数μ为负，则底τ统一可以适应于所测得的分支比Br（b对s γ）。另一方面，如果我们采用最新的μ子g-2数据，要求正的超对称贡献，那么在超对称尺度上的错误符号阈值校正会以超过20%的差异打乱汤川统一。它必须通过围绕大统一理论尺度的超重阈值校正来补偿，这限制了超对称大统一理论中的风味模型。一种模式的超粒子质量的三个要求的首选也进行了评论。
In the minimal SUSY SU(5) GUT with $O(1)$ TeV SUSY particles and $O(1)$ or below self-coupling for the GUT-breaking Higgs field, the width of the dimension-6 proton decay is suppressed below the reach of Hyper-Kamiokande. In this paper, we point out that a SUSY SO(10) GUT which adopts only ${\bf 45}_{\rm H}+{\bf 16}_{\rm H}+{\bf \overline{16}}_{\rm H}$ GUT-breaking Higgs fields leads to an enhanced dimension-6 proton decay width detectable at Hyper-Kamiokande. The enhancement is because the SU(5)-breaking VEV of ${\bf 45}_{\rm H}$ arises due to Planck-suppressed terms, $W\propto ({\bf 45}_{\rm…
Supersymmetric penguin contributions to the process \protect\protect\protect(B_{d}\longrightarrow ΦK_{s}\protect \protect \protect) in SUSY GUT with right-handed neutrino.}
The ratio of the partial widths of some dimension-5 proton decay modes can be predicted without detailed knowledge of SUSY particle masses, and thus allows us to experimentally test various SUSY GUT models without discovering SUSY particles. In this paper, we study the ratio of the partial widths of the $p\to K^0μ^+$ and $p\to K^+\barν_μ$ decays in the minimal renormalizable SUSY $SO(10)$ GUT, under only a plausible assumption that the 1st and 2nd generation left-handed squarks are mass-degenerate. In the model, we expect that the Wilson coefficients of dimension-5 operators responsible for th…
We propose a model with $A_4$ flavor symmetry for leptons and quarks in the framework of supersymmetric SU(5) grand unified theory (GUT). The running masses of quarks and charged leptons at GUT scale ($\sim 10^{16}$ GeV) are realized by the adjoint 24-dimensional Higgs multiplet and additional gauge singlet scalar fields including flavons. In this paper, we focus on a result of the quark and charged lepton masses and quark mixing since our present model is known to reproduce recent experimental results of the neutrino mass and oscillation. Those results are showed numerically.
Neutrino properties in E6 x SU(2)F SUSY GUT with spontaneous CP violation
我们研究了E6 x SU（2）F超对称大统一理论中自发CP破坏的中微子扇区。乍一看，为了解决超对称CP问题而引入的离散对称性对允许的算子的约束太强，以至于中微子扇区与实验数据不一致，即，μ中微子变得无质量，如前一篇论文所述。我们表明，如果考虑到一些运营商，这个问题可以得到解决。我们看到，这样的算符在研究夸克和带电轻子扇区时并不起重要作用。对中微子质量和混合的预测与E6模型相同，这与中微子振荡的各种实验是一致的。
