Leptogenesis with testable Dirac neutrino mass generation

被引：8
|
作者：
Gu, Pei-Hong [1 ,2 ]
机构：
[1] Southeast Univ, Sch Phys, Jiulonghu Campus, Nanjing 211189, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
来源：
PHYSICS LETTERS B | 2020年 / 805卷
基金：
中国国家自然科学基金;
关键词：
LEPTON NUMBER; BARYOGENESIS; MIXINGS; TRIPLET; SEESAW; BARYON; MODELS;
D O I：
10.1016/j.physletb.2020.135411
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A TeV-scale Higgs doublet can acquire a tiny vacuum expectation value via its small mixing with the standard model Higgs doublet. This new Higgs doublet then can offer a testable Dirac neutrino mass generation through its sizable Yukawa couplings with several right-handed neutrinos and the standard model lepton doublets. We show the small mixing between the two Higgs doublets can be naturally induced by a seesaw mechanism after an additional symmetry is spontaneously broken. In association with the second Higgs doublet decays, this seesaw mechanism can also accommodate a leptogenesis mechanism to generate the baryon asymmetry in the universe. © 2020 The Author(s)
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页数：7
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