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Title: Retrieval of energy spectra for all flavours of neutrinos from core-collapse supernova with multiple detectors

Abstract

ABSTRACT We present a new method by which to retrieve energy spectrum for all falvours of neutrinos from core-collapse supernova (CCSN). In the retrieval process, we do not assume any analytic formulas to express the energy spectrum of neutrinos but rather take a direct way of spectrum reconstruction from the observed data; the singular value decomposition algorithm with a newly developed adaptive energy-gridding technique is adopted. We employ three independent reaction channels having different flavour sensitivity to neutrinos. Two reaction channels, inverse beta decay on proton and elastic scattering on electrons, from a water Cherenkov detector such as Super-Kamiokande (SK) and Hyper-Kamiokande (HK), and a charged current reaction channel with Argon from the Deep Underground Neutrino Experiment (DUNE) are adopted. Given neutrino oscillation models, we iteratively search the neutrino energy spectra at the CCSN source until they provide the consistent event counts in the three reaction channels. We test the capability of our method by demonstrating the spectrum retrieval to a theoretical neutrino data computed by our recent three-dimensional CCSN simulation. Although the energy spectrum with either electron-type or electron-type antineutrinos at the CCSN source has relatively large error compared to that of other species, the joint analysis with HKmore » + DUNE or SK + DUNE will provide precise energy spectrum of all flavours of neutrinos at the source. Finally, we discuss perspectives for improvements of our method by using neutrino data of other detectors.« less

Authors:
ORCiD logo [1]
  1. Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA
Publication Date:
Research Org.:
Univ. of California, Oakland, CA (United States); Univ. of California, San Diego, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1712533
Alternate Identifier(s):
OSTI ID: 1852585
Grant/Contract Number:  
AC03-76SF00098; SC0018297; AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 500 Journal Issue: 1; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; supernovae: general

Citation Formats

Nagakura, Hiroki. Retrieval of energy spectra for all flavours of neutrinos from core-collapse supernova with multiple detectors. United Kingdom: N. p., 2020. Web. doi:10.1093/mnras/staa3287.
Nagakura, Hiroki. Retrieval of energy spectra for all flavours of neutrinos from core-collapse supernova with multiple detectors. United Kingdom. https://doi.org/10.1093/mnras/staa3287
Nagakura, Hiroki. Fri . "Retrieval of energy spectra for all flavours of neutrinos from core-collapse supernova with multiple detectors". United Kingdom. https://doi.org/10.1093/mnras/staa3287.
@article{osti_1712533,
title = {Retrieval of energy spectra for all flavours of neutrinos from core-collapse supernova with multiple detectors},
author = {Nagakura, Hiroki},
abstractNote = {ABSTRACT We present a new method by which to retrieve energy spectrum for all falvours of neutrinos from core-collapse supernova (CCSN). In the retrieval process, we do not assume any analytic formulas to express the energy spectrum of neutrinos but rather take a direct way of spectrum reconstruction from the observed data; the singular value decomposition algorithm with a newly developed adaptive energy-gridding technique is adopted. We employ three independent reaction channels having different flavour sensitivity to neutrinos. Two reaction channels, inverse beta decay on proton and elastic scattering on electrons, from a water Cherenkov detector such as Super-Kamiokande (SK) and Hyper-Kamiokande (HK), and a charged current reaction channel with Argon from the Deep Underground Neutrino Experiment (DUNE) are adopted. Given neutrino oscillation models, we iteratively search the neutrino energy spectra at the CCSN source until they provide the consistent event counts in the three reaction channels. We test the capability of our method by demonstrating the spectrum retrieval to a theoretical neutrino data computed by our recent three-dimensional CCSN simulation. Although the energy spectrum with either electron-type or electron-type antineutrinos at the CCSN source has relatively large error compared to that of other species, the joint analysis with HK + DUNE or SK + DUNE will provide precise energy spectrum of all flavours of neutrinos at the source. Finally, we discuss perspectives for improvements of our method by using neutrino data of other detectors.},
doi = {10.1093/mnras/staa3287},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 500,
place = {United Kingdom},
year = {Fri Oct 23 00:00:00 EDT 2020},
month = {Fri Oct 23 00:00:00 EDT 2020}
}

Journal Article:
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https://doi.org/10.1093/mnras/staa3287

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