Mechanism for ordinary-sterile neutrino mixing

Efficient oscillations between ordinary (active) and sterile neutrinos can occur only if Dirac and Majorana mass terms exist which are both small and comparable. It is shown that this can occur naturally in a class of string models, in which higher-dimensional operators in the superpotential lead to...

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Veröffentlicht in:	Physical Review, D D, 1998-11, Vol.58 (9), Article 093017
1. Verfasser:	Langacker, Paul
Format:	Artikel
Sprache:	eng
Schlagworte:	COSMIC NEUTRINOS MASS NEUTRINO OSCILLATION PHYSICS STRING MODELS
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description	Efficient oscillations between ordinary (active) and sterile neutrinos can occur only if Dirac and Majorana mass terms exist which are both small and comparable. It is shown that this can occur naturally in a class of string models, in which higher-dimensional operators in the superpotential lead to an intermediate scale expectation value for a scalar field and to suppressed Dirac and Majorana fermion masses. {copyright} {ital 1998} {ital The American Physical Society}
doi_str_mv	10.1103/PhysRevD.58.093017
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subjects	COSMIC NEUTRINOS MASS NEUTRINO OSCILLATION PHYSICS STRING MODELS
title	Mechanism for ordinary-sterile neutrino mixing
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