What can we learn on supernova neutrino spectra with water Cherenkov detectors?

Abstract

We investigate the precision with which the supernova neutrino spectra can be reconstructed in water Cherenkov detectors, in particular the large scale Hyper-Kamiokande and Super-Kamiokande. To this aim, we consider quasi-thermal neutrino spectra modified by the Mikheev-Smirnov-Wolfenstein effect for the case of normal ordering. We perform three 9 degrees of freedom likelihood analyses including first inverse-beta decay only, then the combination of inverse beta decay and elastic scattering on electrons and finally a third analysis that also includes neutral scattering neutrino-oxygen events. A tenth parameter is added in the analyses to account for the theoretical uncertainty on the neutral current neutrino-oxygen cross section. By assuming a 100\% efficiency in Hyper-Kamiokande, we show that one can reconstruct the electron antineutrino average energy and pinching parameter with an accuracy of $\sim 2\%$ and $\sim 7\%$ percent respectively, while the antineutrino integrated luminosity can be pinned down at $\sim 3\%$ percent level. As for the muon and tau neutrinos, the average energy and the integrated luminosity can be measured with $\sim 7\%$ precision. These results represent a significant improvement with respect Super-Kamiokande, particularly for the pinching parameter defining the electron antineutrino spectra. As for electron neutrinos, the determination of the emission parameters requires the addition of supplementary detection channels.

22 pages, 19 figures, 7 tables

References in corpus (10)

• Supernova Neutrino Detection
• Instability of a stalled accretion shock: evidence for the advective-acoustic cycle
• Improved analysis of SN1987A antineutrino events
• Neutrinos from Supernovae as a Trigger for Gravitational Wave Search
• Earth matter effects in supernova neutrinos: Optimal detector locations
• Getting the Most from Detection of Galactic Supernova Neutrinos in Future Large Liquid-Scintillator Detectors
• Comparative analysis of SN1987A antineutrino fluence
• Diffuse Supernova Neutrino Background from extensive core-collapse simulations of $8$-$100{\mathrm{M}}_{\odot }$ progenitors
• Parameter Degeneracy in Flavor-Dependent Reconstruction of Supernova Neutrino Fluxes
• Measuring the neutron star compactness and binding energy with supernova neutrinos

Cited by in corpus (30)

• Supernova Neutrino Burst Detection with the Deep Underground Neutrino Experiment
• Fast Flavor Depolarization of Supernova Neutrinos
• Observable signatures of enhanced axion emission from protoneutron stars
• Core-collapse supernova neutrino emission and detection informed by state-of-the-art three-dimensional numerical models
• RES-NOVA: A new neutrino observatory based on archaeological lead
• Supernova neutrino signals based on long-term axisymmetric simulations
• The KM3NeT potential for the next core-collapse supernova observation with neutrinos
• Neutrino Signals of Core-Collapse Supernovae in Underground Detectors
• Retrieval of energy spectra for all flavor of neutrinos from core-collapse supernova with multiple detectors
• Black hole hyperaccretion in collapsars. I. MeV neutrinos
• Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment
• Nuclear structure uncertainties in coherent elastic neutrino-nucleus scattering
• Model-independent diagnostic of self-induced spectral equalization versus ordinary matter effects in supernova neutrinos
• Supernova neutrino fluxes in HALO-1kT, Super-Kamiokande, and JUNO
• Non-thermal neutrinos created by shock acceleration in successful and failed core-collapse supernova
• Probing protoneutron stars with gamma-ray axionscopes
• Late time supernova neutrino signal and proto-neutron star radius
• Quantum witness and invasiveness of cosmic neutrino measurements
• Supernova Neutrinos as a Precise Probe of Nuclear Neutron Skin
• A deuterated liquid scintillator for supernova neutrino detection
• Supernovae Time Profiles as a Probe of New Physics at Neutrino Telescopes
• Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae
• Future Opportunities in Accelerator-based Neutrino Physics
• Supernova Neutrino Scattering off Gadolinium Even Isotopes in Water Cherenkov Detectors
• Supernova electron-neutrino interactions with xenon in the nEXO detector
• Exploring Neutrino Mass Orderings through Supernova Neutrino Detection
• Neutrino transport with Monte Carlo method: II. Quantum Kinetic Equations
• Measuring the Low-Energy Weak Mixing Angle with Supernova Neutrinos
• Supernova neutrino physics with a nuclear emulsion detector
• Supernova $\nu$ flavour conversions in DUNE: the slow, the fast and the standard