Seesaw right-handed neutrino as the sterile neutrino for LSND

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.033007· OSTI ID:20711197

Mohapatra, R N; Nasri, S; Haibo, Yu ^[1]

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1. Department of Physics and Center for String and Particle Theory, University of Maryland, College Park, Maryland 20742 (United States)

We show that a double seesaw framework for neutrino masses with {mu}-{tau} exchange symmetry can lead to one of the right-handed seesaw partners of the light neutrinos being massless. This can play the role of a light sterile neutrino, giving a 3+1 model that explains the Liquid Scintillator Neutrino Detector (LSND) results. We get a very economical scheme, which makes it possible to predict the full 4x4 neutrino mass matrix if CP is conserved. Once CP violation is included, the effect of the LSND mass range sterile neutrino is to eliminate the lower bound on neutrinoless double beta decay rate which exists for the three neutrino case with inverted mass hierarchy. The same strategy can also be used to generate a natural 3+2 model for LSND, which is also equally predictive for the CP conserving case in the limit of exact {mu}-{tau} symmetry.

• OSTI ID: 20711197
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CP INVARIANCE
DOUBLE BETA DECAY
LIQUID SCINTILLATION DETECTORS
MUONS
NEUTRINO DETECTION
NEUTRINO REACTIONS
NEUTRINOS
REST MASS
TAU PARTICLES