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arXiv 2104.13071hep-ph
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逆跷跷板中织构零点对暗物质和无中微子双β衰变的影响

Impact of texture zeros on dark matter and neutrinoless double beta decay in inverse seesaw

Nayana Gautam, Mrinal Kumar Das

摘要:

我们在逆跷跷板ISS $(2,3)$框架下研究了狄拉克质量矩阵的极大零点对中微子现象和暗物质的影响。ISS $(2,3)$是通过在标准模型中加入两个右手中微子和三个规范单线态无菌费米子而得到的,这导致了在keV范围内的额外无菌状态。该模型是更好的预测,因为存在的右手中微子的数量比传统的反跷跷板。此外,纹理零的质量矩阵的结构中所涉及的模型可以减少自由参数。我们广泛地研究了狄拉克质量矩阵的不同纹理对无菌中微子暗物质现象学的影响。我们的研究还包括这些纹理零质量矩阵的影响,低能量的现象,如中微子双β衰变(0 $νββ$)。零纹理高度约束模型的参数空间。基于允许的宇宙学范围内的遗迹丰度,衰变率,和暗物质与活跃的中微子混合,我们研究的框架内的不同纹理的可行性。

英文摘要:

We study the impact of maximal zeros of the Dirac mass matrix on neutrino phenomenology and dark matter within the framework of an inverse seesaw ISS $(2,3)$. ISS $(2,3)$ is obtained by adding two right handed neutrinos and three gauge singlets sterile fermions to the standard model leading to an extra sterile state in the keV range. The model is more predictive because of the presence of fewer numbers of right handed neutrinos than the conventional inverse seesaw. Moreover, texture zeros in the structures of the mass matrices involved in the model can reduce the free parameters. We extensively study the effect of different textures of Dirac mass matrix on sterile neutrino dark matter phenomenology. Our study also includes the implications of these texture zero mass matrices on low energy phenomena like neutrinoless double beta decay (0$νββ$). The zero textures highly constrain the parameter space of the model. Based on the allowed cosmological ranges of the relic abundance, decay rates, and dark matter mixing with the active neutrinos, we study the viability of the different textures within the framework.

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