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ID 57499
FullText URL
Author
Hara, Hideaki Research Institute for Interdisciplinary ScienceOkayama University ORCID Kaken ID
Yoshimura, Motohiko Research Institute for Interdisciplinary ScienceOkayama University
Abstract
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.
Published Date
2019-08-14
Publication Title
The European Physical Journal C
Volume
volume79
Publisher
Springer
Start Page
684
ISSN
14346044
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
Copyright Holders
© The Author(s) 2019
File Version
publisher
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1140/epjc/s10052-019-7148-y
License
http://creativecommons.org/licenses/by/4.0/
Citation
Hara, H. & Yoshimura, M. Eur. Phys. J. C (2019) 79: 684. https://doi.org/10.1140/epjc/s10052-019-7148-y
Funder Name
Ministry of Education, Culture, Sports, Science and Technology
助成番号
17K14363
17H02895