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Neutrino masses, cosmological inflation and dark matter in a variant U(1)B-L model with type II seesaw mechanism Supported by Conselho Nacional de Pesquisa e Desenvolvimento Cientfico - CNPq (C.A.S.P) and Coordenao de Aperfeicoamento de Pessoal de Nvel Superior - CAPES (A.C.O.S and J.G.R)
Chinese Physics C ( IF 3.6 ) Pub Date : 2021-01-30 , DOI: 10.1088/1674-1137/abd01a
J. G. Rodrigues 1, 2 , A. C. O. Santos 1 , J. G. Ferreira Jr 1 , C. A. de S. Pires 1
Affiliation  

In this study, we implemented the type II seesaw mechanism into the framework of the $U(1)_{\rm B-L}$ gauge model. To achieve this, we added a scalar triplet, $ \Delta $, to the canonical particle content of the $U(1)_{\rm B-L}$ gauge model. By imposing that the $U(1)_{\rm B-L}$ gauge symmetry be spontaneously broken at TeV scale, we show that the type II seesaw mechanism is realized at an intermediate energy scale, more precisely, at approximately $ 10^9 $ GeV. To prevent heavy right-handed neutrinos from disturbing the mechanism, we evoke a $ Z_2 $ discrete symmetry. Interestingly, as a result, we have standard neutrinos with mass around eV scale and right-handed neutrinos with mass in TeV scale, with the lightest one fulfilling the condition of dark matter. We developed all of these in this study. In addition, we show that the neutral component of $ \Delta $ may perform unproblematic non-minimal inflation with loss of unitarity.



中文翻译:

具有 II 型跷跷板机制的变体 U(1)BL 模型中的中微子质量、宇宙膨胀和暗物质 由 Conselho Nacional de Pesquisa e Desenvolvimento Cientfico - CNPq (CASP) 和 Coordenao de Aperfeicoamento de Pessoal de Nvel Superior - CAPES (ACOS 和JGR)

在这项研究中,我们将 II 型跷跷板机制应用到$U(1)_{\rm BL}$规范模型的框架中。为了实现这一点,我们在规范模型$ \三角洲$的规范粒子内容中添加了一个标量三元组 , 。$U(1)_{\rm BL}$通过强加$U(1)_{\rm BL}$在 TeV 尺度上自发破坏规范对称性,我们表明 II 型跷跷板机制是在中间能量尺度上实现的,更准确地说,在大约$ 10^9 $GeV 处。为了防止重的右手中微子干扰机制,我们唤起了一个$ Z_2 $离散对称。有趣的是,结果,我们得到了质量在 eV 尺度左右的标准中微子和质量在 TeV 尺度的右旋中微子,其中最轻的中微子满足了暗物质的条件。我们在这项研究中开发了所有这些。此外,我们表明 的中性分量$ \三角洲$可能会执行没有问题的非最小膨胀,但会失去统一性。

更新日期:2021-01-30
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