Atmospheric neutrino observations and flavor changing interactions

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Title:	Atmospheric neutrino observations and flavor changing interactions
Author:	González García, Ma. Concepción; Guzzo, M. M.; Krastev, P. I.; Nunokawa, H.; Peres, O. L. G.; Pleitez, V.; Valle, José Wagner Furtado; Zukanovich Funchal, R.
Other authors:	Universitat de Barcelona
Abstract:	Flavor changing (FC) neutrino-matter interactions can account for the zenith-angle-dependent deficit of atmospheric neutrinos observed in the SuperKamiokande experiment, without directly invoking either neutrino mass or mixing. We find that FC nm-matter interactions provide a good fit to the observed zenith angle distributions, comparable in quality to the neutrino oscillation hypothesis. The required FC interactions arise naturally in many attractive extensions of the standard model.
Subject(s):	-Partícules (Física nuclear) -Reaccions nuclears -Particles (Nuclear physics) -Nuclear reactions
Rights:	(c) American Physical Society, 1999
Document type:	Article Article - Published version
Published by:	American Physical Society
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