論文

査読有り 本文へのリンクあり
2018年10月

Leptogenesis via neutrino oscillation magic

JOURNAL OF HIGH ENERGY PHYSICS
  • Yuta Hamada
  • ,
  • Ryuichiro Kitano
  • ,
  • Wen Yin

担当区分
責任著者
10
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/JHEP10(2018)178
出版者・発行元
SPRINGER

The possibility of generating the baryon asymmetry of the Universe via flavor oscillation in the early Universe is discussed. After the inflation, leptons are born in some states, travel in the medium, and are eventually projected onto flavor eigenstates due to the scattering via the Yukawa interactions. By using the Lagrangian of the Standard Model with the Majorana neutrino mass terms, llHH, we follow the time evolution of the density matrices of the leptons in this very first stage of the Universe and show that the CP violation in the flavor oscillation can explain the baryon asymmetry of the Universe. In the scenario where the reheating is caused by the decay of the inflaton into the Higgs bosons, the baryon asymmetry is generated by the CP phases in the Pontecorvo-Maki-Nakagawa-Sakata matrix and thus can be tested by the low energy neutrino experiments.

Web of Science ® 被引用回数 : 7

リンク情報
DOI
https://doi.org/10.1007/JHEP10(2018)178
arXiv
http://arxiv.org/abs/arXiv:1807.06582
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000449259900007&DestApp=WOS_CPL
Arxiv Url
http://arxiv.org/abs/1807.06582v2
Arxiv Url
http://arxiv.org/pdf/1807.06582v2 本文へのリンクあり

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