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arXiv 0812.3031hep-phastro-phhep-ex
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具有主导集体效应的超新星中微子三味演化

Supernova neutrino three-flavor evolution with dominant collective effects

Gianluigi Fogli, Eligio Lisi, Antonio Marrone, Irene Tamborra

摘要:

在具有代表性的三味方案中,研究了一颗核塌缩星系超新星的中微子和反中微子通量,该方案具有倒置的质量等级和微小的1-3混合。初始风味演变是由集体自相互作用的影响,这是计算在一个完整的三个家庭的框架沿平均径向轨迹。在考虑的整个时间跨度(t=1-20秒),中微子和反中微子光谱分裂出现在能源领域的最后,可观察到的通量的主导功能。一些次要或不可观察的三族特征(例如,与μ-τ-离子风味部分相关)也进行了讨论。主要结果可用于特定探测器的SN事件率模拟。

英文摘要:

Neutrino and antineutrino fluxes from a core-collapse galactic supernova are studied, within a representative three-flavor scenario with inverted mass hierarchy and tiny 1-3 mixing. The initial flavor evolution is dominated by collective self-interaction effects, which are computed in a full three-family framework along an averaged radial trajectory. During the whole time span considered (t=1-20 s), neutrino and antineutrino spectral splits emerge as dominant features in the energy domain for the final, observable fluxes. Some minor or unobservable three-family features (e.g., related to the muonic-tauonic flavor sector) are also discussed for completeness. The main results can be useful for SN event rate simulations in specific detectors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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