arXiv 1502.069292015-02hep-ph

非超对称SO（10）大统一模型中的暗物质与规范耦合统一

Dark Matter and Gauge Coupling Unification in Non-supersymmetric SO(10) Grand Unified Models

Yann Mambrini, Natsumi Nagata, Keith A. Olive, Jeremie Quevillon, Jiaming Zheng

备注：: 39 pages, 8 figures. Version accepted for publication in Physical Review D
发表信息：: Phys. Rev. D 91, 095010 (2015)
DOI：: 10.1103/PhysRevD.91.095010

摘要：

与最小SU（5）不同，SO（10）提供了一个直接的途径，通过修改规范耦合的重整化群演化超过一些中间尺度，这也可能与中微子质量的跷跷板机制。对于SO（10）破缺标度以下的几种不同的中间规范群选择，可以实现统一。在这项工作中，我们详细考虑的可能性，SO（10）统一也可能提供一个自然的暗物质的候选人，稳定性保证了剩余的$Z_2$对称性。我们系统地研究了可能的中间规范群，允许一个非简并的，费米子的，标准模型单重暗物质候选人，而在同一时间尊重规范耦合统一。我们的分析是在两个循环的水平。令人惊讶的是，尽管SO（10）的丰富性，我们发现只有两个模型生存的唯象约束的分析，其中包括适当的中微子质量，质子衰变和再加热。

英文摘要：

Unlike minimal SU(5), SO(10) provides a straightforward path towards gauge coupling unification by modifying the renormalization group evolution of the gauge couplings above some intermediate scale which may also be related to the seesaw mechanism for neutrino masses. Unification can be achieved for several different choices of the intermediate gauge group below the SO(10) breaking scale. In this work, we consider in detail the possibility that SO(10) unification may also provide a natural dark matter candidate, stability being guaranteed by a leftover $Z_2$ symmetry. We systematically examine the possible intermediate gauge groups which allow a non-degenerate, fermionic, Standard Model singlet dark matter candidate while at the same time respecting gauge coupling unification. Our analysis is done at the two-loop level. Surprisingly, despite the richness of SO(10), we find that only two models survive the analysis of phenomenological constraints, which include suitable neutrino masses, proton decay, and reheating.

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。

摘要：

英文摘要：

相关论文