论文标题
有多少个1环中微子质量模型？
How many 1-loop neutrino mass models are there?
论文作者
论文摘要
众所周知，在Tree层，D = 5 Weinberg操作员可以通过三种不同的方式生成著名的Seesaw模型。在本文中，我们研究了一个相关的问题，即一个现象学上一致的1循环模型可以在d = 5时构建的。首先，我们讨论有两种可能的1环中微子质量模型，可以避免稳定的带电文物：（i）具有暗物质候选者的模型以及（ii）具有“退出”的模型。在这里，我们将“退出”定义为可以腐烂到标准模型字段的粒子。考虑具有新标量和费米的1循环模型，我们在深色物质类中发现了总数（113+205）型号，而在出口类中，我们发现（38+368）型号。在这里，113是需要稳定对称性的DM型号的数量，而205是包含候选暗物质的模型的数量，可能意外稳定。在出口类中，38是指模型，循环中的一个（或两个）内部粒子是SM场，而368型模型仅包含中微子质量图中SM（BSM）以外的字段。然后，我们研究所有1循环模型中规格耦合的RGE演变。我们列表中的许多模型都以相当低的能量耦合导致Landau极点耦合，并且有一个模型以超过$ 10^{15} $ GEV的量规耦合以数值可接受的方式统一了量规耦合。
It is well-known that at tree-level the d=5 Weinberg operator can be generated in exactly three different ways, the famous seesaw models. In this paper we study the related question of how many phenomenologically consistent 1-loop models one can construct at d=5. First, we discuss that there are two possible classes of 1-loop neutrino mass models, that allow avoiding stable charged relics: (i) Models with dark matter candidates and (ii) models with "exits". Here, we define "exits" as particles that can decay into standard model fields. Considering 1-loop models with new scalars and fermions, we find in the dark matter class a total of (113+205) models, while in the exit class we find (38+368) models. Here, 113 is the number of DM models, which require a stabilizing symmetry, while 205 is the number of models which contain a dark matter candidate, which maybe accidentally stable. In the exit class the 38 refers to models, for which one (or two) of the internal particles in the loop is a SM field, while the 368 models contain only fields beyond the SM (BSM) in the neutrino mass diagram. We then study the RGE evolution of the gauge couplings in all our 1-loop models. Many of the models in our list lead to Landau poles in some gauge coupling at rather low energies and there is exactly one model which unifies the gauge couplings at energies above $10^{15}$ GeV in a numerically acceptable way.
