论文标题
脂肪的牛brane和seesaw机构在额外的尺寸
Fat brane and seesaw mechanism in extra dimensions
论文作者
论文摘要
在本文中，我们提出了一种更高维的Seesaw机制。我们考虑一个单一的，扁平的额外维度，其中脂肪勃起已定位并包含标准模型（SM）字段，类似于通用额外的维度模型。散装中只有一个迪拉克·费米，在四个维度中，这导致了两个塔塔的Kaluza-klein（KK）Majorana无菌中微子，其质量与SM中微子的混合抑制了隆隆含量的基因中微子。无菌中微子和SM之间的相互作用是通过通常的耦合与Higgs玻色子的相互作用，其中耦合取决于紧凑型半径$ r^{ - 1} = 10^{ - 2} -1 $ gev和fat brane $ l^fat brane $ l^{ - 1} = 2 $ tev的宽度，避免了lhc cons lh，lhs cons cons cons cons cons cons cons cons cose由于这种抑制机制，最轻的无菌中微子的质量可以是$ \ MATHCAL {O}（1-10）$〜\ text {tev}，而自然地解释了小的SM中微子质量，从而可以轻松地获得大量参数选择。此外，中微子振荡并未受到无菌KK颗粒塔的影响。最后，在此设置中研究了瘦的发生，并且对于参数空间内的某些值是可行的。
In this paper we present a higher-dimensional seesaw mechanism. We consider a single, flat extra dimension, where a fat brane is localized and contains the standard model (SM) fields, similar to Universal Extra Dimension models. There is only one Dirac fermion in the bulk, and in four dimensions it results in two towers of Kaluza-Klein (KK) Majorana sterile neutrinos, whose mass mixing with the SM neutrinos is suppressed due to a brane-localized kinetic term. The interaction between the sterile neutrinos and the SM is through the usual coupling with the Higgs boson, where the coupling depends upon the compactification radius $R^{-1}=10^{-2}-1$ GeV and the width of the fat brane $L^{-1}=2$ TeV, where the latter value is chosen to avoid LHC constraints. Due to this suppression mechanism the mass of the lightest sterile neutrinos can be of order $\mathcal{O}(1-10)$~\text{TeV} while naturally explaining the small SM neutrino mass, which in turn is easily obtained for a large range of parameter choices. Furthermore, neutrino oscillations are not substantially influenced by the tower of sterile KK particles. Finally, leptogenesis is investigated in this setup, and it is viable for some values within the parameter space.
