Four-neutrino mass spectra and the Super-Kamiokande atmospheric up-down asymmetry

1999/03/23 by S. M. Bilenky, C. Giunti, Walter Grimus +3 · 5 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.60.073007

published as Phys.Rev. D60 (1999) 073007 · 4 pages

arxiv created 1999/03/23 · openalex publication_date 1999/09/08 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In the framework of schemes with mixing of four massive neutrinos, which can accommodate the atmospheric, solar and LSND ranges of \ensuremathΔm² and contain three active neutrinos and a sterile one, we show that, in the whole region of \ensuremathΔm_LSND² allowed by LSND, the Super-Kamiokande up-down asymmetry excludes all mass spectra with a group of three close neutrino masses separated from the fourth mass by the LSND gap of order 1 eV. Only two schemes with mass spectra in which two pairs of close masses are separated by the LSND gap can describe the Super-Kamiokande up-down asymmetry and all other existing neutrino oscillation data.

Citations

• The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2
• Atmospheric ratio in the multi-GeV energy range
• Limits on Muon-Neutrino Oscillations in the Mass Range30<Δm2<1000eV2/c4

Cited by

• Combined analysis of short-baseline neutrino experiments in the(3+1)and(3+2)sterile neutrino oscillation hypotheses
• Four-neutrino oscillations
• Physics at a future Neutrino Factory and super-beam facility
• Phenomenology with massive neutrinos
• Explaining LSND by a decaying sterile neutrino