Solar neutrino fluxes with arbitrary He-3 mixing - art. no. 123002

Citation
V. Berezinsky et al., Solar neutrino fluxes with arbitrary He-3 mixing - art. no. 123002, PHYS REV D, 6012(12), 1999, pp. 3002
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6012
Issue
12
Year of publication
1999
Database
ISI
SICI code
0556-2821(199912)6012:12<3002:SNFWAH>2.0.ZU;2-U
Abstract
The He-3 abundance is not constrained by helioseismic data. Mixing of He-3 inside the solar core by processes not included in the solar standard model (SSM) has been recently proposed as a possible solution to the solar neutr ino problem. We have performed a model-independent analysis of solar neutri no fluxes using practically arbitrary He-3 mixing. In addition, we have bee n simultaneously varying within very wide ranges the temperature in the neu trino production zone and the astrophysical factors S-17 and S-34 of the p + Be-7 and He-3+He-4 cross sections. Seismic data are used as constraints, but the solar-luminosity constraint is not imposed. It is demonstrated that even allowing 3He abundances higher by factors up to 16 than in the SSM, t emperatures 5% (or more) lower, the astrophysical factor S-17 UP to 40% hig her, and varying S34 in the range (-20%,+ 40%), the best fit is still more than 5 sigma away from the observed fluxes. We conclude that practically ar bitrary 3He mixing combined with independent variations of temperature and cross sections cannot explain the observed solar neutrino fluxes. [S0556-28 21(99)04622-6].