Seesaw energy scale and the LSND anomaly

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

DOI:https://doi.org/10.1103/PhysRevD.72.033005· OSTI ID:20711195

Gouvea, Andre de ^[1]

---

1. Northwestern University, Department of Physics and Astronomy, 2145 Sheridan Road, Evanston, Illinois 60208 (United States)

The most general, renormalizable Lagrangian that includes massive neutrinos contains 'right-handed neutrino' Majorana masses of order M. While there are prejudices in favor of M>>M{sub weak}, virtually nothing is known about the magnitude of M. I argue that the Liquid Scintillator Neutrino Detector (LSND) anomaly provides, currently, the only experimental hint: M{approx}1 eV. If this is the case, the LSND mixing angles are functions of the active neutrino masses and mixing and, remarkably, adequate fits to all data can be naturally obtained. I also discuss consequences of this 'eV-seesaw' for supernova neutrino oscillations, tritium beta-decay, neutrinoless double-beta-decay, and cosmology.

• OSTI ID: 20711195
• 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
COSMOLOGY
DOUBLE BETA DECAY
EV RANGE
LAGRANGIAN FUNCTION
NEUTRINO OSCILLATION
NEUTRINOS
RENORMALIZATION
REST MASS
SUPERNOVAE
TRITIUM
WEINBERG ANGLE