ID | 57499 |
フルテキストURL | |
著者 |
Hara, Hideaki
Research Institute for Interdisciplinary ScienceOkayama University
ORCID
Kaken ID
researchmap
Yoshimura, Motohiko
Research Institute for Interdisciplinary ScienceOkayama University
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抄録 | A new scheme using macroscopic coherence is proposed to experimentally determine the neutrino mass matrix, in particular the absolute value of neutrino masses, and the mass type, Majorana or Dirac. The proposed process is a collective, coherent Raman scattering followed by neutrino-pair emission from | e of a long lifetime to | g ;.0 + | e .. + i j.i. j + | g with.i. j consisting of six massive neutrino-pairs. Calculated angular distribution has six (i j) thresholds which showup as steps at different angles. Angular locations of thresholds and event rates of the angular distribution make it possible to experimentally determine the smallest neutrino mass to the level of less than several meV, (accordingly all threemasses using neutrino oscillation data), the mass ordering pattern, normal or inverted, and to distinguish whether neutrinos are ofMajorana or Dirac type. Event rates of neutrino-pair emission, when the mechanism of macroscopic coherence amplification works, may become large enough for realistic experiments by carefully selecting certain types of target. The problem to be overcome is macro-coherently amplified quantum electrodynamic background of the process,.0 + | e .. +.2 +.3 + | g , when two extra photons,.2,.3, escape detection. We illustrate our idea using neutral Xe and trivalent Ho ion doped in dielectric crystals.
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発行日 | 2019-08-14
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出版物タイトル |
The European Physical Journal C
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巻 | 79巻
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出版者 | Springer
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開始ページ | 684
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ISSN | 14346044
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © The Author(s) 2019
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論文のバージョン | publisher
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1140/epjc/s10052-019-7148-y
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ライセンス | http://creativecommons.org/licenses/by/4.0/
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Citation | Hara, H. & Yoshimura, M. Eur. Phys. J. C (2019) 79: 684. https://doi.org/10.1140/epjc/s10052-019-7148-y
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助成機関名 |
文部科学省
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助成番号 | 17K14363
17H02895
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