Search for matter-dependent atmospheric neutrino oscillations in Super-Kamiokande

Citations Over TimeTop 10% of 2008 papers

Abstract

We consider ${\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ 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.

Related Papers

• → The Super-Kamiokande experiment(2019)36 cited
• → Constraints on Neutrino Oscillation Parameters from the Measurement of Day-Night Solar Neutrino Fluxes at Super-Kamiokande(1999)358 cited
• → Status of solar neutrino observation at Super-Kamiokande(2003)16 cited
• → Other neutrino oscillation measurements(2013)
• → Solar neutrino measurement in Super-Kamiokande III(2011)