用超新星中子化爆发中微子探测长程\(L_e - L_μ\)力
Probing long-range $L_e-L_μ$ forces with supernova neutronization burst neutrinos
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中文总结 AI 辅助
研究在无反常的\(U(1)'_{L_e - L_μ}\)框架下，利用超新星中子化爆发中微子探测长程轻子相互作用。通过将长程势纳入中微子振荡并在DUNE中模拟，发现长程势会显著改变电子中微子存活概率，未来对银河系超新星中微子观测可提供灵敏探测。
中文摘要 AI 辅助
与味依赖轻子对称性相关的超轻规范玻色子会产生长程势，可改变天体物理距离上的中微子味演化。我们在无反常的\(U(1)'_{L_e - L_μ}\)框架下，研究核心坍缩超新星的中子化爆发中微子对这种相互作用的敏感性。将长程势纳入超新星中微子振荡，利用40kt液态氩时间投影室的实际探测器响应，在深地下中微子实验（DUNE）中模拟相应信号。结果表明，在长程势占主导或与真空振荡项可比的范围内，电子中微子存活概率会显著改变，这将在中子化爆发中微子能谱的时间和能量分布上产生可观测的畸变。我们的结果表明，未来对银河系超新星中微子的观测，特别是来自如参宿四这样附近事件的观测，能为味依赖的长程轻子相互作用提供灵敏且互补的探测。
英文摘要
Ultralight gauge bosons associated with flavour-dependent leptonic symmetries generate long-range potentials that can modify neutrino flavour evolution over astrophysical distances. We investigate the sensitivity of neutronization-burst neutrinos from core-collapse supernovae for such interactions in the anomaly-free $U(1)'_{L_e-L_μ}$ framework. Incorporating the long-range potential into supernova neutrino oscillations, we simulate the corresponding signal in the Deep Underground Neutrino Experiment (DUNE) using a realistic detector response of its 40 kt Liquid Argon Time Projection Chamber. We show that in the range where the long-range potential dominates over or is comparable to the vacuum oscillation term, the electron-neutrino survival probability can be significantly modified. This would produce observable distortions in the time and energy distributions of the neutronization burst neutrino spectra. Our results demonstrate that future observations of galactic supernova neutrinos, particularly from a nearby event such as Betelgeuse, can provide a sensitive and complementary probe of flavour-dependent long-range leptonic interactions.
