Oscillation effects on supernova neutrino rates and spectra and detection of the shock breakout in a liquid Argon TPC

2003/07/31 by I. Gil-Botella, A. Rubbia
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1088/1475-7516/2003/10/009

published as JCAP0310:009,2003 · 40 pages, 19 figures, version v2 accepted for publication in JCAP. accepted in JCAP

arxiv created 2003/09/26 · arxiv updated 2009/12/01

Abstract

A liquid Argon TPC (ICARUS-like) has the ability to detect clean neutrino bursts from type-II supernova collapses. In this paper, we consider for the first time the four possible detectable channels, namely, the elastic scattering on electrons from all neutrino species, ν_e charged current absorption on Ar with production of excited K, ν_e charged current absorption on Ar with production of excited Cl and neutral current interactions on Ar from all neutrino flavors. We compute the total rates and energy spectra of supernova neutrino events including the effects of the three--flavor neutrino oscillation with matter effects in the propagation in the supernova. Results show a dramatic dependence on the oscillation parameters and in the energy spectrum, especially for charged-current events. The shock breakout phase has also been investigated using recent simulations of the core collapse supernova. We stress the importance of the neutral current signal to decouple supernova from neutrino oscillation physics.

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