Effect of Collective Flavor Oscillations on the Diffuse Supernova Neutrino Background

Abstract

Collective flavor oscillations driven by neutrino-neutrino self interaction inside core-collapse supernovae have now been shown to bring drastic changes in the resultant neutrino fluxes. This would in turn significantly affect the diffuse supernova neutrino background (DSNB), created by all core-collapse supernovae that have exploded in the past. In view of these collective effects, we re-analyze the potential of detecting the DSNB in currently running and planned large-scale detectors meant for detecting both electron neutrinos and antineutrinos. The next generation detectors should be able to observe DSNB fluxes. Under certain conducive conditions, one could learn about neutrino parameters. For instance, it might be possible to determine the neutrino mass hierarchy, even if theta_{13} is almost zero.

Ver3 (24 pages, 4 figures and 4 tables): Reference added. Figure 1 corrected. Misprints corrected. Acknowledgment added. No changes in results. Supercedes the version published in JCAP

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Cited by in corpus (5)

• The Diffuse Supernova Neutrino Background is detectable in Super-Kamiokande
• Role of dense matter in collective supernova neutrino transformations
• Diffuse neutrino flux from failed supernovae
• Three Flavor Neutrino Oscillations in Matter: Flavor Diagonal Potentials, the Adiabatic Basis and the CP phase
• Realistic Earth matter effects and a method to acquire information about small θ_{13} in the detection of supernova neutrinos