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Type: Artigo de periódico
Title: Type-II supernovae and neutrino magnetic moments
Author: Nunokawa, H
Tomas, R
Valle, J
Abstract: The present solar and atmospheric neutrino data together with the LSND results and the presence of hot dark matter (HDM) suggest the existence of a sterile neutrino at the eV scale. We have reanalysed the effect of resonant sterile neutrino conversions induced by neutrino magnetic moments in a type-II supernova. We analyse the implications of nu(e) - nu(s) and <(nu)over bar>(e) - <(nu)over bar>(s) (<(nu)over bar>(s) denotes sterile neutrino) conversions for the supernova shock reheating, the detected <(nu)over bar>(e) signal from SN1987A and the r-process nucleosynthesis hypothesis. Using reasonable magnetic field profiles we determine the sensitivity of these three arguments to the relevant neutrino parameters, i.e., the value of the transition magnetic moment and the nu(e) - nu(s) mass difference Delta m(2) drop Delta m(LSND/HDM)(2) (C) 1999 Elsevier Science B.V, All rights reserved.
Country: Holanda
Editor: Elsevier Science Bv
Citation: Astroparticle Physics. Elsevier Science Bv, v. 11, n. 3, n. 317, n. 325, 1999.
Rights: fechado
Identifier DOI: 10.1016/S0927-6505(98)00072-3
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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