论文标题
用两个HigG降低Fermion三胞胎瘦的尺度
Lowering the scale of fermion triplet leptogenesis with two Higgs doublets
论文作者
论文摘要
在本文中，我们考虑了在中微子质量的三胞胎费米介导类型的III Seesaw Seesaw模型的背景下，通过瘦素发生产生宇宙观察到的重子不对称的可能性。使用额外费米子的层次谱，最轻质三重质量的下限为$ \ sim 10^{10} {\ rm〜gev} $，用于成功的瘦化生成，几个订单高于I type-i type-i。我们研究了在两-higgs-doublet模型的框架中降低这种结合的可能性。我们发现，对于层次范围，可以将边界降低至$ 10^7 $ GEV。如果我们包括风味效应，则可以进一步降低一个数量级。我们还讨论了这种降低是否与三重态质量的自然界限兼容。
In this paper, we consider the possibility of generating the observed baryon asymmetry of the Universe via leptogenesis in the context of triplet fermion mediated type-III seesaw model of neutrino mass. With a hierarchical spectrum of the additional fermions, the lower bound on the lightest triplet mass is $\sim 10^{10} {\rm~GeV}$ for successful leptogenesis, a couple of orders higher than that of the type-I case. We investigate the possibility of lowering this bound in the framework of two-Higgs-doublet models. We find that the bounds can be lowered down to $10^7$ GeV for a hierarchical spectrum. If we include the flavor effects, then a further lowering by one order of magnitude is possible. We also discuss if such lowering can be compatible with the naturalness bounds on the triplet mass.
