Supernova neutrino fluxes in HALO-1kT, Super-Kamiokande, and JUNO

Dec 23, 2020
28 pages
Published in:
  • JCAP 06 (2021) 046
  • Published: Jun 28, 2021
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Abstract: (IOP)
When the next galactic core-collapse supernova occurs, we must be ready to obtain as much information as possible. Although many present and future detectors are well equipped to detect νe and νx neutrinos, the detection of the νe species presents the biggest challenges. We assess the impact that a 1 ktonne lead-based detector, such as HALO-1kT, can have in constraining electron neutrino time-integrated fluxes. The study involves the detector taken alone as well as when combined with massive νe-sensitive detectors such as Super-Kamiokande and JUNO. We find that HALO-1kT alone is not able to strongly constrain the emission parameters. When combined with other detectors, however, the orthogonal information might be helpful in improving the νe total emitted energy and mean energy accuracy, up to about 50%, if no other νe-sensitive channel is implemented. A discussion on the reconstruction of νe and νx species, as well as the total emitted energy, is also presented.
Note:
  • Revised model 9.6 solar masses. Figures and tables updated, results unchanged
  • neutrino: supernova
  • energy: emission
  • KAMIOKANDE
  • JUNO
  • statistics
  • electron
  • galaxy