Scotogenic dark symmetry as a residual subgroup of Standard Model symmetries  

作　　者：Salvador Centelles Chuliá Ricardo Cepedello Eduardo Peinado Rahul Srivastava 

机构地区：[1]AHEP Group,Institut de Física Corpuscular-CSIC-Universitat de València,Parc Científic de Paterna.C/Catedrático JoséBeltrán,2 E-46980 Paterna(Valencia)-SPAIN [2]Instituto de Física,Universidad Nacional Autónoma de México,A.P.20-364,Ciudad de México 01000,México [3]Department of Physics,Indian Institute of Science Education and Research-Bhopal,Bhopal Bypass Road,Bhauri,Bhopal,India

出　　处：《Chinese Physics C》2020年第8期108-114,共7页中国物理C（英文版）

基　　金：supported by the Spanish grants FPA2017-85216-P(AEI/FEDER,UE);PROMETEO/2018/165(Generalitat Valenciana)and the Spanish Red Consolider MultiDark FPA2017-90566-REDC.SCC is supported by the Spanish grant BES-2016-076643;RC is supported by the Spanish grant FPU15/03158;EP is sopported by the grants CONACYT CB-2017-2018/A1-S-13051(México)and DGAPA-PAPIIT IN107118(UNAM México)。

摘　　要：We demonstrate that a scotogenic dark symmetry can be obtained as a residual subgroup of the global U(1)B−L symmetry already present in the Standard Model.In addition,we propose a general framework in which the U(1)B−L symmetry is spontaneously broken into an even Z2n subgroup,setting the general conditions for neutrinos to be Majorana and for dark matter stability to exist in terms of the residual Z2n.As an example,under this general framework,we build a class of simple models where,in a scotogenic manner,the dark matter candidate is the lightest particle running inside the mass loop of a neutrino.The global U(1)B−L symmetry in our framework,being anomaly free,can also be gauged in a straightforward manner leading to a richer phenomenology.

关 键 词：neutrino masses dark matter SYMMETRIES scotogenic 

分 类 号：O572.2[理学—粒子物理与原子核物理]