2006/08/31 by G. L. Fogli, E. Lisi, A. Mirizzi +4 · 1 citation
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Atmosphere (unit) #Cosmic ray #Dark Matter and Cosmic Phenomena #Meteorology #Neutrino #Neutrino Physics Research #Neutrino oscillation #Oscillation (cell signaling) #Particle physics #Physics #Solar neutrino #Solar neutrino problem #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevd.74.093004
published as Phys.Rev.D74:093004,2006 · v2: 11 pages, 8 eps figures. Content added (Sec. III D and Fig. 6), references updated. Matches the published version
arxiv created 2006/11/10 · openalex publication_date 2006/11/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The Sun is a source of high-energy neutrinos (E\ensuremath\gtrsim10 GeV) produced by cosmic ray interactions in the solar atmosphere. We study the impact of three-flavor oscillations (in vacuum and in matter) on solar atmosphere neutrinos, and calculate their observable fluxes at Earth, as well as their event rates in a kilometer-scale detector in water or ice. We find that peculiar three-flavor oscillation effects in matter, which can occur in the energy range probed by solar atmosphere neutrinos, are significantly suppressed by averaging over the production region and over the neutrino and antineutrino components. In particular, we find that the relation between the neutrino fluxes at the Sun and at the Earth can be approximately expressed in terms of phase-averaged vacuum oscillations, dominated by a single mixing parameter (the angle \ensuremathθ23).