On SU(5) Grand Unified Models with Extra Symmetries and their Experimental Testability

这一年，我一直在研究南布-戈德斯通（NG）希格斯大统一理论（GUT）模型。我们研究了包含SU(5)为子群的全局SU(6)对称性的超对称（SUSY） SU(5) GUT模型，以解释希格斯粒子为NG希格斯粒子，并解决了双三重态分裂问题。我们利用重整化群方程用超对称性参数表示GUT参数，并计算了不同软超对称性破断情景下的质子衰变。我也在做另一个项目，用手性摄动理论计算质子衰变。我们正尝试用手性微扰理论来改善不同通道下质子衰变的结果。它可以帮助将实验边界与理论预测联系起来，以测试GUT模型。

In this year, I have been working on Nambu-Goldstone (NG) Higgs grand unified theories (GUT) models. We studied supersymmetric (SUSY) SU(5) GUT model with a global SU(6) symmetry including SU(5) as a subgroup to explain Higgs as NG Higgs particles and to solve the doublet-triplet splitting problem. We used renormalization group equations to represent the GUT parameters by the SUSY parameters and calculated the proton decay with different soft-SUSY-breaking scenarios.I am also doing another project about the calculation of proton decay using chiral perturbation theory. We are trying to use chiral perturbation theory to improve the results of proton decays for different channels. It could help to connect the experimental bounds to theoretical predictions to test GUT models.