2009/06/30 by Sebastien Galais, Sébastien Galais, James P. Kneller +4
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Formalism (music) #Mechanics #Neutrino #Neutrino Physics Research #Neutrino oscillation #Particle physics #Particle physics theoretical and experimental studies #Physics #Shock (circulatory) #Shock wave #Supernova #hep-ph
paper · pdf · doi:10.1103/physrevd.81.053002
published as Phys.Rev.D81:053002,2010 · 8 pages, 9 figures
arxiv created 2009/11/18 · openalex publication_date 2010/03/04 · arxiv updated 2014/11/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate shock wave effects upon the diffuse supernova neutrino background using dynamic profiles taken from hydrodynamical simulations and calculating the neutrino evolution in three flavors with the S-matrix formalism. We show that the shock wave impact is significant and introduces modifications of the relic fluxes by about 20% and of the associated event rates at the level of 10%--20%. Such an effect is important since it is of the same order as the rate variation introduced when different oscillation scenarios (i.e., hierarchy or \ensuremathθ13) are considered. In addition, due to the shock wave, the rates become less sensitive to collective effects, in the inverted hierarchy and when sin22\ensuremathθ13 is between the Chooz limit and 10^\ensuremath-5. We propose a simplified model to account for shock wave effects in future predictions.