2008/05/31 by Cecilia Lunardini, Orlando L. G. Peres, Orlando L G Peres · 6 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #astro-ph #hep-ph
paper · pdf · doi:10.1088/1475-7516/2008/08/033
published as JCAP 0808:033,2008 · PDFLaTeX, 27 pages, eight figures, six tables; revised version with two new figures; accepted in JCAP
arxiv created 2008/08/21 · openalex publication_date 2008/08/28 · arxiv updated 2011/07/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We analyze the 1496 days of SuperKamiokande data to put limits on the ν e , , ν μ +ν τ and components of the diffuse flux of supernova neutrinos, in different energy intervals and for different neutrino energy spectra. By considering the presence of only one component at a time, we find the following bounds at 90% CL and for neutrino energy E >19.3 MeV: Φ ν e <73.3–154 cm −2 s −1 , , Φ ν μ +ν τ <(1.0–1.4) × 10 3 cm −2 s −1 and , where the intervals account for varying the neutrino spectrum. In the interval E = 22.9–36.9 MeV, we find Φ ν e <39–54 cm −2 s −1 , which improves on the existing limit from SNO in the same energy window. Our results for ν μ +ν τ and improve by about four orders of magnitude the previous best constraints from LSD.