%0 Journal Article
%T High-dimensional neutrino masses
%A Anamiati, G.
%A Castillo-Felisola, O.
%A Fonseca, R. M.
%A Helo, J. C.
%A Hirsch, M.
%J Journal of High Energy Physics
%D 2018
%V 12
%N 12
%I Springer
%@ 1029-8479
%G English
%F Anamiati_etal2018
%O WOS:000453296100001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3845), last updated on Wed, 22 May 2019 10:41:36 +0000
%X For Majorana neutrino masses the lowest dimensional operator possible is the Weinberg operator at d = 5. Here we discuss the possibility that neutrino masses originate from higher dimensional operators. Specifically, we consider all tree-level decompositions of the d = 9, d = 11 and d = 13 neutrino mass operators. With renormalizable interactions only, we find 18 topologies and 66 diagrams for d = 9, and 92 topologies plus 504 diagrams at the d = 11 level. At d = 13 there are already 576 topologies and 4199 diagrams. However, among all these there are only very few genuine neutrino mass models: At d = (9, 11, 13) we find only (2,2,2) genuine diagrams and a total of (2,2,6) models. Here, a model is considered genuine at level d if it automatically forbids lower order neutrino masses without the use of additional symmetries. We also briefly discuss how neutrino masses and angles can be easily fitted in these high-dimensional models.
%K Beyond Standard Model
%K Neutrino Physics
%R 10.1007/JHEP12(2018)066
%U http://arxiv.org/abs/1806.07264
%U https://doi.org/10.1007/JHEP12(2018)066
%P 066-26pp