Supernova Signatures of Neutrino Mass Ordering

Timing and Multi-Channel: Novel Method for Determining the Neutrino Mass Ordering from Supernovae

One of the few remaining unknowns in the standard three-flavor neutrino oscillation paradigm is the ordering of neutrino masses. In this work we propose a novel method for determining neutrino mass ordering using the time information on early supernova neutrino events. In a core-collapse supernova, neutrinos are produced earlier than antineutrinos and, depending on the mass ordering which affects the adiabatic flavor evolution, may cause earlier observable signals in $ν_e$ detection channels than in others. Hence, the time differences are sensitive to the mass ordering. We find that using the …

超新星中微子的非标准相互作用与DUNE的质量排序歧义

Non-Standard Interactions of Supernova Neutrinos and Mass Ordering Ambiguity at DUNE

本研究揭示非标准中微子相互作用会改变超新星中微子共振味转换模式与中子化爆发信号，DUNE可借此探测低至0.1量级的NSI，同时该效应可能造成质量排序的混淆，为相关实验与理论研究提供参考。

通过三元图研究中微子质量顺序问题

Investigating the Neutrino Mass Ordering Problem via Ternary Plots

利用三元图分析超新星中微子通量模型的时间演化，探讨中微子质量顺序问题的区分特征。

利用水切伦科夫探测器通过下一次银河系核心坍缩超新星中微子暴揭示中微子质量序

Uncovering the neutrino mass ordering with the next galactic core-collapse supernova neutrino burst using water Cherenkov detectors

本研究针对中微子质量序测定难题，利用水切伦科夫探测器分析八种核心坍缩超新星模型的轻子分布差异对质量序判定的影响，发现结果均为正确或无定论、无显著假阳性，同时强调了超新星建模研究的重要性。

Neutrino signature of supernova hydrodynamical instabilities in three dimensions

The first full-scale three-dimensional (3D) core-collapse supernova (SN) simulations with sophisticated neutrino transport show pronounced effects of the standing accretion shock instability (SASI) for two high-mass progenitors (20 and 27 M_sun). In a low-mass progenitor (11.2 M_sun), large-scale convection is the dominant nonradial hydrodynamic instability in the postshock accretion layer. The SASI-associated modulation of the neutrino signal (80 Hz in our two examples) will be clearly detectable in IceCube or the future Hyper-Kamiokande detector, depending on progenitor properties, distance,…

Signatures of collective and matter effects on supernova neutrinos at large detectors

We calculate the expected galactic supernova neutrino signal at large next-generation underground detectors. At different epochs after the explosion, the primary fluxes can be quite different. For these primary neutrino fluxes, spectral splits induced by collective neutrino flavor transformations can arise for either mass hierarchy in both neutrino and antineutrino channels. We classify flux models according to the nature and number of these splits, and calculate the observable electron-neutrino and electron-antineutrino spectra at Earth, taking into account subsequent matter effects. We find …