CERN Accelerating science

Article
Report number arXiv:1811.11178
Title Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae
Author(s) Bar, Nitsan (Weizmann Inst.) ; Blum, Kfir (CERN ; Weizmann Inst.) ; D'Amico, Guido (Stanford U., ITP ; CERN)
Publication 2019-06-07
Imprint 2018-11-27
Number of pages 24
Note 28 pages, 18 figures
In: Phys. Rev. D 99 (2019) 123004
DOI 10.1103/PhysRevD.99.123004
Subject category hep-ph ; Particle Physics - Phenomenology ; astro-ph.HE ; Astrophysics and Astronomy
Abstract We study the ratio of neutrino-proton elastic scattering to inverse beta decay event counts, measurable in a scintillation detector like JUNO, as a key observable for identifying the explosion mechanism of a galactic core-collapse supernova. If the supernova is not powered by the core but rather, e.g., by collapse-induced thermonuclear explosion, then a prolonged period of accretion-dominated neutrino luminosity is predicted. Using 1D numerical simulations, we show that the distinct resulting flavour composition of the neutrino burst can be tested in JUNO with high significance, overcoming theoretical uncertainties in the progenitor star profile and equation of state.
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preprint: (License: arXiv nonexclusive-distrib 1.0)



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