Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos
Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos
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DOI：
10.1088/1475-7516/2021/03/043
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发表时间：
2021-03-01
影响因子：
6.4
通讯作者：
Zykova, M. P.
中科院分区：
文献类型：
--
作者：
Agnes, P.;Albergo, S.;Zykova, M. P.
未来的液氩DarkSide-20 k和Argo探测器，设计用于直接暗物质搜索，也将通过相干弹性中微子-核散射对核心坍缩超新星中微子敏感。这种相互作用通道具有高横截面，对味道不敏感，能够分别对DarkSide-20 k和Argo进行高统计中微子探测，目标质量分别接近50 t和360 t。由于利用电离通道可实现的低能量阈值接近0.5 keV（nr），暗面-20 k和阿尔戈有可能发现超新星爆发整个我们的银河系和小麦哲伦云，分别假设一个11 M圆的点祖星星。我们还报告的灵敏度的中子化爆发，其电子中微子通量被抑制的振荡时，通过带电电流和弹性散射检测。最后，在重建的平均和总中微子能量在不同阶段的超新星爆发，以及其时间分布的准确性，也进行了讨论，考虑到预期的背景和检测器的响应。
Future liquid-argon DarkSide-20k and Argo detectors, designed for direct dark matter search, will be sensitive also to core-collapse supernova neutrinos, via coherent elastic neutrino-nucleus scattering. This interaction channel is flavor-insensitive with a high-cross section, enabling for a high-statistics neutrino detection with target masses of similar to 50 t and similar to 360 t for DarkSide-20k and Argo respectively.Thanks to the low-energy threshold of similar to 0.5 keV(nr) achievable by exploiting the ionization channel, DarkSide-20k and Argo have the potential to discover supernova bursts throughout our galaxy and up to the Small Magellanic Cloud, respectively, assuming a 11-M-circle dot progenitor star. We report also on the sensitivity to the neutronization burst, whose electron neutrino flux is suppressed by oscillations when detected via charged current and elastic scattering. Finally, the accuracies in the reconstruction of the average and total neutrino energy in the different phases of the supernova burst, as well as its time profile, are also discussed, taking into account the expected background and the detector response.