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首页> 外文期刊>Physical review, D >Robust measurement of supernova ν_e spectra with future neutrino detectors
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Robust measurement of supernova ν_e spectra with future neutrino detectors

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Measuring precise all-flavor neutrino information from a supernova is crucial for understanding the corecollapse process as well as neutrino properties.We apply a chi-squared analysis for different detector setups to explore determination of ν_e 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 ν_e 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 ν_e spectral parameters.

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