Lepton universality in the νMSM

被引：16
作者：
Asaka, Takehiko [1 ]
Eijima, Shintaro [2 ]
Takeda, Kazuhiro [3 ]
机构：
[1] Niigata Univ, Dept Phys, Niigata 9502181, Japan
[2] Ecole Polytech Fed Lausanne, Inst Theorie Phenomenes Phys, CH-1015 Lausanne, Switzerland
[3] Niigata Univ, Grad Sch Sci & Technol, Niigata 9502181, Japan
来源：
PHYSICS LETTERS B | 2015年 / 742卷
基金：
瑞士国家科学基金会;
关键词：
PROCESSES INVOLVING NEUTRINOS; STERILE NEUTRINOS; GENERAL-THEORY; DARK-MATTER; SEARCH; BOUNDS; DECAYS; MASSES; TESTS; RATIO;
D O I：
10.1016/j.physletb.2015.01.049
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider the nu MSM which is an extension of the Standard Model by three right-handed neutrinos with masses below the electroweak scale, in which the origins of neutrino masses, dark matter, and baryon asymmetry of the universe are simultaneously explained. Among three heavy neutral leptons, N-2 and N-3, which are responsible to the seesaw mechanism of active neutrino masses and the baryogenesis via flavor oscillation, can induce sizable contributions to various lepton universality in decays of charged mesons. Then the possible deviations of the universality in the nu MSM are investigated. We find that the deviation in kaon decay can be as large as O(10(-3)), which will be probed in near future experiments. (C) 2015 The Authors. Published by Elsevier B.V.
引用
收藏
页码：303 / 309
页数：7
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