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Revisiting discrete dark matter model: theta(13) ≠ 0 and v(R) dark matter
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| Title: | Revisiting discrete dark matter model: theta(13) ≠ 0 and v(R) dark matter |
| Authors: | Hamada, Yuta Browse this author | | Kobayashi, Tatsuo Browse this author →KAKEN DB | | Ogasahara, Atsushi Browse this author | | Omura, Yuji Browse this author | | Takayama, Fumihiro Browse this author | | Yasuhara, Daiki Browse this author |
| Keywords: | Beyond Standard Model | | Neutrino Physics | | Discrete and Finite Symmetries |
| Issue Date: | 30-Oct-2014 |
| Publisher: | Springer |
| Journal Title: | Journal of high energy physics |
| Volume: | 2014 |
| Issue: | 10 |
| Start Page: | 183 |
| Publisher DOI: | 10.1007/JHEP10(2014)183 |
| Abstract: | We revisit the discrete dark matter model with the A(4) flavor symmetry originally introduced by M.Hirsch et. al. We show that radiative corrections can lead to non-zero theta(13) and the non-zero mass for the lightest neutrino. We find an interesting relation among neutrino mixing parameters and it indicates the sizable deviation of s(23) from the maximal angle s(23)(2) = 1/2 and the degenerate mass spectrum for neutrinos. Also we study the possibilities that the right-handed neutrino is a dark matter candidate. Assuming that the thermal freeze-out explains observed dark matter abundance, TeV-scale right-handed neutrino and flavored scalar bosons are required. In such a case, the flavor symmetry plays an important role for the suppression of lepton flavor violating processes as well as for the stability of dark matter. We show that this scenario is viable within currently existing constraints from collider, low energy experiments and cosmological observations. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/57767 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 小林 達夫
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