论文标题

Lepton不对称和暗物质的非热产生,右手中微子诱导的Higgs潜力

Non-thermal production of lepton asymmetry and dark matter in minimal seesaw with right handed neutrino induced Higgs potential

论文作者

Samanta, Rome, Biswas, Anirban, Bhattacharya, Sukannya

论文摘要

在I型SEESAW机制中,可以通过右手中微子的量子效应动态生成Higgs质量,假设在超紫罗兰属的电势几乎是共形的。该场景被称为“中微子选项”,可允许RH Neutrino质量规模高达$ M \ Lessim $ 10^7 $ GEV,与轻中微子群众,混合和Higgs质量一致。因此,它与标准分层热静脉生成不符。在该模型中,热谐振诱导生成的参数空间受到高度限制。我们指出,从充气衰减中的Rh Neutrinos的非热对产生通常对应于CP不对称参数中的温和共振,并且允许RH质量尺度比通过热强共振案例的数量级小得多。在热卵生生成的类似参数空间内,Rh Neutrinos也可以从Aftraton衰减以及具有质量$ M _ {\ rm dm dm} \ Lessim $ 320 MEV的暗物质产生。后一种情况下的主要限制来自于无暗的流媒体上的LY $α$约束。另外,我们还显示,中微子选项为RH质量尺度引入了“幻影窗口”,其中与通常的场景相反,瘦素发生的CP不对称参数随着RH质量尺度的增加和微调微调的Seesaw自然表现出这种“ phantom窗口”。

Within Type-I seesaw mechanism, Higgs mass can be dynamically generated via quantum effects of the right handed neutrinos assuming the potential is nearly conformal at the Ultra-Violet. The scenario, named as the "Neutrino Option" allows RH neutrino mass scale upto $M \lesssim$ $10^7$ GeV to be consistent with light neutrino masses, mixing and Higgs mass. Therefore, it is not consistent with standard hierarchical thermal leptogenesis. Parameter space for thermal resonant leptogenesis is highly constrained in this model. We point out that non-thermal pair production of RH neutrinos from inflaton decay corresponds in general to a mild degree of resonance in the CP asymmetry parameter and allows RH mass scale to be smaller more than by an order of magnitude than the thermal strong resonance case. Within the similar parameter space of thermal leptogenesis, RH neutrinos can also be produced from inflaton decay along with a Dark Matter having mass $M_{\rm DM}\lesssim$ 320 MeV. The main constraint in the latter scenario comes from the Ly$α$ constraints on Dark Matter free streaming. We show in addition, that the Neutrino Option introduces a 'phantom window' for the RH mass scale, in which contrary to the usual scenarios, CP asymmetry parameter for leptogenesis decreases with the increase of the RH mass scale and minimally fine-tuned seesaw models naturally exhibit this `phantom window'.

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