论文标题
完成犀牛
Completing RHINO
论文作者
论文摘要
右撇子（RH）HigGS诱导的中微子混合（Rhino）模型在统一图片中解释了宇宙中物质的中微子质量和物质的起源。该混合物有效地由尺寸五算子进行了有效描述，这既是黑暗中微子的产生，又转化了一小部分的Seesaw Neutminos作为来源，并且是因为它们的衰变。我们表明，包括来自Higgs门户相互作用的源中微子的产生，它们的丰度可以在源黑暗中微子振荡发作之前进行热度，从而增强了深色中微子的产生，从而可以发挥衰减的暗物质（DM）的作用，从而提高了更高的SeeSAW量表。这可以在Sphaleron冻结温度上方，高达$ \ sim 100 \，{\ rm tev} $，因此对于生成物质抗对称的不对称性生成的强热谐振诱导生成是可行的。我们获得了$ \ sim 1 \，{\ rm tev} $ - $ 1 \，{\ rm pev} $允许的暗中微子质量范围。有趣的是，他们的衰减还可以解释$ {\ cal o}（100 \，{\ rm tev}）$ energies的中微子多余的通量。我们的结果还指出了HIGGS门户相互作用的有效量表，可以很好地识别宏伟的量表，并且低于混合的有效量表以下。我们在紫外线完整模型中解释了这种层次结构，其较重的费用是中介者：第一刻度对应于新物理学的基本规模，而第二个量表则更高，因为与对称性破坏参数的非常小的耦合可识别。因此，犀牛实现了当前在中微子望远镜上受到审查的宇宙中中微子质量和物质起源的简单统一模型，并可能在宏伟的模型中嵌入。
The right-handed (RH) Higgs-induced neutrino mixing (RHINO) model explains neutrino masses and origin of matter in the universe within a unified picture. The mixing, effectively described by a dimension five operator, is responsible both for the production of dark neutrinos, converting a small fraction of seesaw neutrinos acting as source, and for their decays. We show that including the production of source neutrinos from Higgs portal interactions, their abundance can thermalise prior to the onset of source-dark neutrino oscillations, resulting into an enhanced production of dark neutrinos that thus can play the role of decaying dark matter (DM) for a much higher seesaw scale. This can be above the sphaleron freeze-out temperature and as high as $\sim 100\,{\rm TeV}$, so that strong thermal resonant leptogenesis for the generation of the matter-antimatter asymmetry is viable. We obtain a $\sim 1\,{\rm TeV}$--$1\,{\rm PeV}$ allowed dark neutrino mass range. Intriguingly, their decays can also explain a neutrino flux excess at ${\cal O}(100\,{\rm TeV})$ energies recently confirmed by the IceCube collaboration analysing 7.5yr HESE data. Our results also point to an effective scale for Higgs portal interactions nicely identifiable with the grandunified scale and many orders of magnitude below the effective scale for the mixing. We explain this hierarchy in a UV-complete model with a very heavy fermion as mediator: the first scale corresponds to the fundamental scale of new physics, while the second is much higher because of a very small coupling identifiable with a symmetry breaking parameter. Therefore, RHINO realises a simple unified model of neutrino masses and origin of matter in the universe currently under scrutiny at neutrino telescopes and potentially embeddable within a grandunified model.
