Measuring precise all-flavor neutrino information from a supernova is crucial for understanding the core-collapse process as well as neutrino properties. We apply a chi-squared analysis for different detector setups to explore determination of νe spectral parameters. Using a long-term two-dimensional core-collapse simulation with three time-varying spectral parameters, we generate mock data to examine the capabilities of the current Super-Kamiokande detector and compare the relative improvements that gadolinium, Hyper-Kamiokande, and DUNE would have. We show that in a realistic three spectral parameter framework, the addition of gadolinium to Super-Kamiokande allows for a qualitative improvement in νe determination. Efficient neutron tagging will allow Hyper-Kamiokande to constrain spectral information more strongly in both the accretion and cooling phases. Overall, significant improvements will be made by Hyper-Kamiokande and DUNE, allowing for much more precise determination of νe spectral parameters.
@article{osti_1424724,
author = {Nikrant, Alex and Laha, Ranjan and Horiuchi, Shunsaku},
title = {Robust measurement of supernova <math display='inline'><msub><mi>ν</mi><mi>e</mi></msub></math> spectra with future neutrino detectors},
annote = {Measuring precise all-flavor neutrino information from a supernova is crucial for understanding the core-collapse process as well as neutrino properties. We apply a chi-squared analysis for different detector setups to explore determination of νe spectral parameters. Using a long-term two-dimensional core-collapse simulation with three time-varying spectral parameters, we generate mock data to examine the capabilities of the current Super-Kamiokande detector and compare the relative improvements that gadolinium, Hyper-Kamiokande, and DUNE would have. We show that in a realistic three spectral parameter framework, the addition of gadolinium to Super-Kamiokande allows for a qualitative improvement in νe determination. Efficient neutron tagging will allow Hyper-Kamiokande to constrain spectral information more strongly in both the accretion and cooling phases. Overall, significant improvements will be made by Hyper-Kamiokande and DUNE, allowing for much more precise determination of νe spectral parameters.},
doi = {10.1103/physrevd.97.023019},
url = {https://www.osti.gov/biblio/1424724},
journal = {Physical Review. D.},
issn = {ISSN 2470-0010},
number = {2},
volume = {97},
place = {United States},
publisher = {American Physical Society (APS)},
year = {2018},
month = {01}}
NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS: 9th International Workshop on Neutrino Factories, Superbeams, and Betabeams, AIP Conference Proceedingshttps://doi.org/10.1063/1.2899006
Maund, Justyn R.; Crowther, Paul A.; Janka, Hans-Thomas
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 375, Issue 2105https://doi.org/10.1098/rsta.2017.0025