Neutrino masses,cosmological inflation and dark matter in a variant U(1)B-L model with type II seesaw mechanism  

作　　者：J.G.Rodrigues A.C.O.Santos J.G.Ferreira Jr C.A.de S.Pires 

机构地区：[1]Departamento de Física,Universidade Federal da Paraíba,Caixa Postal 5008,58051-970,João Pessoa,PB,Brasil [2]Departamento de Física,Universidade Federal do Rio Grande do Norte,59078-970,Natal,RN,Brasil

出　　处：《Chinese Physics C》2021年第2期621-630,共10页中国物理C（英文版）

基　　金：Supported by Conselho Nacional de Pesquisae Desenvolvimento Cintifico-CNPq(C.A.S.P)and Coordenacao de Aperfeicoamento de Pesscal de Nivel Superi-or-CAPES(A.C.O.S and J.G.R).

摘　　要：In this study,we implemented the type Ⅱ seesaw mechanism into the framework of the U(l)B-L gauge model.To achieve this,we added a scalar triplet,A,to the canonical particle content of the U(l)B-Lgauge model.By imposing that the U(l)B-L gauge symmetry be spontaneously broken at TeV scale,we show that the type Ⅱ seesaw mechanism is realized at an intermediate energy scale,more precisely,at approximately 109 GeV.To prevent heavy right-handed neutrinos from disturbing the mechanism,we evoke a Z2 discrete symmetry.Interestingly,as a result,we have standard neutrinos with mass around eV scale and right-handed neutrinos with mass in TeV scale,with the lightest one fulfilling the condition of dark matter.We developed all of these in this study.In addition,we show that the neutral component of Δ may perform unproblematic non-minimal inflation with loss of unitarity.

关 键 词：models beyond the standard model particle-theory and field-theory models of the early universe neutrino mass and mixing 

分 类 号：P159[天文地球—天文学]