论文标题
有效的中微子数量从kev-vacuum中性粒细胞2HDM转移
Effective neutrino number shift from keV-vacuum neutrinophilic 2HDM
论文作者
论文摘要
如果Dirac Neutnotino质量是由新的标量双线块产生的，并在KEV Order处进行真空，那么很少有希望以低能量风味物理学（例如Lepton-Fravor侵犯过程）探测框架。然而，预测的Yukawa中微子耦合在电子育川的范围内可以实现纯粹的乳胶瘦素发生，从而在高能和低能CP违规之间形成更直接的联系。尽管在低能量风味过程中具有惰性特性，但Kev-Vacuum诱导的Dirac中微子模型仍可以产生有效中微子数量的显着转移，这又可以通过Big-bang bang核合成和宇宙微波背景时代进行探测。我们表明，这种Kev-Vacuum诱导的Dirac中微子模型已经受到当前观察结果的限制，并将以预测敏感性进行探测，因此作为测试Dirac瘦素发生的补充途径。
If the Dirac neutrino masses are generated by a new scalar doublet with a vacuum at keV order, there would be rare hope to probe the framework in low-energy flavor physics, such as the lepton-flavor violating processes. However, the predicted neutrino Yukawa couplings being around the order of electronic Yukawa can realize a purely thermal Dirac leptogenesis, and thus render a more direct link between the high- and the low-energy CP violation. Despite its inert property in the low-energy flavor processes, the keV-vacuum induced Dirac neutrino model can generate a significant shift of the effective neutrino number, which can in turn be probed by the big-bang nucleosynthesis and cosmic microwave background epochs. We show that such a keV-vacuum induced Dirac neutrino model is already constrained by the current observations and will be probed with forecast sensitivity, serving therefore as a complementary avenue to test the Dirac leptogenesis.
