2008/01/05 by Kamiokande Collaboration, Y. Hayato, K. Abe +97
Chemistry · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Chemistry #Context (archaeology) #Electron #Electron neutrino #Muon #Neutrino #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Oscillation (cell signaling) #Particle physics #Particle physics theoretical and experimental studies #Physics #Solar neutrino #Super-Kamiokande #Tau neutrino #hep-ex
paper · pdf · doi:10.1103/physrevd.77.052001
published as Phys.Rev.D77:052001,2008 · 6 pages, 1 figure
arxiv created 2008/01/05 · openalex publication_date 2008/03/03 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We consider \ensuremathν_\ensuremathμ\ensuremath→\ensuremathν_\ensuremathτ oscillations in the context of the mass varying neutrino (MaVaN) model, where the neutrino mass can vary depending on the electron density along the flight path of the neutrino. Our analysis assumes a mechanism with dependence only upon the electron density, hence ordinary matter density, of the medium through which the neutrino travels. Fully-contained, partially-contained and upward-going muon atmospheric neutrino data from the Super-Kamiokande detector, taken from the entire SK-I period of 1489 live days, are compared to MaVaN model predictions. We find that, for the case of 2-flavor oscillations, and for the specific models tested, oscillation independent of electron density is favored over density dependence. Assuming maximal mixing, the best-fit case and the density-independent case do not differ significantly.