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arXiv 1111.5462hep-ph
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作为重子不对称、暗物质和中微子质量解决方案的奇异费米子多重态

Exotic fermion multiplets as a solution to baryon asymmetry, dark matter and neutrino masses

Chuan-Hung Chen, Sandy S. C. Law

摘要:

我们提出了一个扩展的标准模型,其中三个奇异的费米子5-plets和一个标量6-plets添加到粒子的内容。通过要求所有的相互作用是可重整化的和标准模型规范不变的,我们表明,在这个模型中最轻的外来粒子可以是一个暗物质的候选人,只要新的6-plet标量不开发一个非零的真空期望值。此外,轻中微子的质量产生辐射在一个圈,而重子的不对称性产生的CP破坏衰变的第二个最轻的奇异粒子。我们已经用具体的例子证明了存在一个参数空间,在这个空间中重子不对称性、暗物质和中微子质量问题可以得到一致的解。

英文摘要:

We propose an extension to the standard model where three exotic fermion 5-plets and one scalar 6-plet are added to the particle content. By demanding that all interactions are renormalizable and standard model gauge invariant, we show that the lightest exotic particle in this model can be a dark matter candidate as long as the new 6-plet scalar does not develop a nonzero vacuum expectation value. Furthermore, light neutrino masses are generated radiatively at one-loop while the baryon asymmetry is produced by the CP-violating decays of the second lightest exotic particle. We have demonstrated using concrete examples that there is a parameter space where a consistent solution to the problems of baryon asymmetry, dark matter and neutrino masses can be obtained.

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。

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