Inverse seesaw model with a modular S4 symmetry: lepton flavor mixing and warm dark matter

被引:7
|
作者
Zhang, Xinyi [1 ]
Zhou, Shun [1 ,2 ]
机构
[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
neutrino properties; neutrino theory; dark matter theory; STERILE NEUTRINOS; OSCILLATIONS; CANDIDATES; VIOLATION; EFFICIENT; BOUNDS; MASS;
D O I
10.1088/1475-7516/2021/09/043
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper, we present a systematic investigation on simple inverse seesaw models for neutrino masses and flavor mixing based on the modular S-4 symmetry. Two right-handed neutrinos and three extra fermion singlets are introduced to account for light neutrino masses through the inverse seesaw mechanism, and to provide a keV-mass sterile neutrino as the candidate for warm dark matter in our Universe. Considering all possible modular forms with weights no larger than four, we obtain twelve models, among which we find one is in excellent agreement with the observed lepton mass spectra and flavor mixing. Moreover, we explore the allowed range of the sterile neutrino mass and mixing angles, by taking into account the direct search of X-ray line and the Lyman- ff observations. The model predictions for neutrino mixing parameters and the dark matter abundance will be readily testable in future neutrino oscillation experiments and cosmological observations.
引用
收藏
页数:28
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