Renormalizable SO (10) grand unified theory with suppressed dimension-5 proton decays
Renormalizable SO (10) grand unified theory with suppressed dimension-5 proton decays
复制标题
具有抑制 5 维质子衰变的可重正化 SO (10) 大统一理论
DOI：
10.1093/ptep/ptaa186
复制
发表时间：
2020
影响因子：
3.5
通讯作者：
Yamada Toshifumi
中科院分区：
文献类型：
--
作者：
Haba Naoyuki;Mimura Yukihiro;Yamada Toshifumi
本文研究了一个可重整化的超对称（SUSY）大统一理论模型，其中单场、单场和单场的Yukawa耦合（、和）可以解释夸克和轻子的Yukawa耦合以及中微子质量。我们追求的可能性是，，和再现正确的夸克和轻子质量，Cabibbo-Kobayashi-Maskawa和Pontecorvo-Maki-Nakagawa-Sakata（PMNS）矩阵和中微子质量差，同时抑制5维质子衰变（质子通过有色希格斯诺交换衰变）通过它们的纹理，以便在不与当前质子衰变实验界限相冲突的情况下尽可能减少软超对称尺度。我们进行了数值搜索这样的纹理，并调查的影响，未知的中微子参数，狄拉克CP相位的PMNS矩阵，最轻的中微子质量，和组件的中微子质量矩阵中的带电轻子的基础上的纹理。在这里，我们集中在的情况下，活动的中微子质量主要是由2型跷跷板机制，在这种情况下，我们可以得到预测的中微子参数的条件下，5维质子衰变被尽可能地抑制。
We study a renormalizable supersymmetric (SUSY)grand unified theory model where the Yukawa couplings of single, single, and singlefields (,, and) account for the quark and lepton Yukawa couplings and the neutrino mass. We pursue the possibility that,, andreproduce the correct quark and lepton masses, Cabibbo–Kobayashi–Maskawa and Pontecorvo–Maki–Nakagawa–Sakata (PMNS) matrices and neutrino mass differences, and at the same time suppress dimension-5 proton decays (proton decays via colored Higgsino exchange) through their texture, so that the soft SUSY-breaking scale can be reduced as much as possible without conflicting the current experimental bound on proton decays. We perform a numerical search for such a texture, and investigate implications of that texture on unknown neutrino parameters, the Dirac CP phase of the PMNS matrix, the lightest neutrino mass, and the-component of the neutrino mass matrix in the charged lepton basis. Here we concentrate on the case when the active neutrino mass is generated mostly by the Type-2 seesaw mechanism, in which case we can obtain predictions for the neutrino parameters from the condition that dimension-5 proton decays be suppressed as much as possible.