English

Supernova Neutrino Detection in Borexino

High Energy Physics - Phenomenology 2008-11-26 v1

Abstract

We calculated the expected neutrino signal in Borexino from a typical Type II supernova at a distance of 10 kpc. A burst of around 110 events would appear in Borexino within a time interval of about 10 s. Most of these events would come from the reaction channel νˉe+pe++n\bar{\nu}_e+p\to e^++n, while about 30 events would be induced by the interaction of the supernova neutrino flux on 12^{12}C in the liquid scintillator. Borexino can clearly distinguish between the neutral-current excitations 12C(ν,ν)12C^{12}{C}(\nu,\nu')^{12}{C}^*(15.11 MeV) and the charged-current reactions 12C(νe,e)12N^{12}{C}(\nu_e,e^-)^{12}{N} and 12C(νˉe,e+)12B^{12}{C}(\bar{\nu}_e,e^+)^{12}{B}, via their distinctive event signatures. The ratio of the charged-current to neutral-current neutrino event rates and their time profiles with respect to each other can provide a handle on supernova and non-standard neutrino physics (mass and flavor oscillations).

Keywords

Cite

@article{arxiv.hep-ph/0012082,
  title  = {Supernova Neutrino Detection in Borexino},
  author = {L. Cadonati and F. P. Calaprice and M. C. Chen},
  journal= {arXiv preprint arXiv:hep-ph/0012082},
  year   = {2008}
}

Comments

19 pages, including 11 figures, submitted to Astroparticle Physics