http://arxiv.org/abs/2203.05141
We introduce a systematic and quantitative methodology for establishing the presence of neutrino oscillatory signals due to the hadron-quark phase transition (PT) in failing core-collapse supernovae from the observed neutrino event rate in water- or ice-based neutrino detectors. The methodology uses a likelihood ratio in the frequency domain as a test-statistic; it is also employed to estimate the frequency, amplitude, starting time, and duration of the PT-induced oscillatory signal present in the neutrino events. Assuming a core-collapse simulation of a 17 solar-mass star by Zha \emph{et al.} (2021) can be used as representative of a future PT-induced oscillatory signal in the two detectors, we find that the presence of a PT can be identified with high confidence for a core-collapse supernovae out to a distance of $\sim 10$ kpc for IceCube and to $\sim 5$ kpc for a 0.4 Mt mass water Cherenkov detector. This methodology will aid the investigation of a future galactic supernova and the study of hadron-quark matter phase in the core of massive stars.
Z. Lin, S. Zha, E. O’Connor, et. al.
Fri, 11 Mar 22
40/59
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