Mimicking diffuse supernova antineutrinos with the Sun as a source

Abstract

Measuring the electron antineutrino component of the cosmic diffuse supernova neutrino background (DSNB) is the next ambitious goal for low-energy neutrino astronomy. The largest flux is expected in the lowest accessible energy bin. However, for E < 15 MeV a possible signal can be mimicked by a solar electron antineutrino flux that originates from the usual 8B neutrinos by spin-flavor oscillations. We show that such an interpretation is possible within the allowed range of neutrino electromagnetic transition moments and solar turbulent field strengths and distributions. Therefore, an unambiguous detection of the DSNB requires a significant number of events at E > 15 MeV.

4 pages, 1 figure

References in corpus (4)

• New results on solar neutrino fluxes from 192 days of Borexino data
• Large underground, liquid based detectors for astro-particle physics in Europe: scientific case and prospects
• Detection potential for the diffuse supernova neutrino background in the large liquid-scintillator detector LENA
• Exploiting the directional sensitivity of the Double Chooz near detector

Cited by in corpus (4)

• Neutrino Physics with JUNO
• Diffuse supernova neutrinos at underground laboratories
• Study of solar and other unknown anti-neutrino fluxes with Borexino at LNGS
• Diffuse neutrino supernova background as a cosmological test