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arXiv 1204.0971hep-phastro-ph.SR
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超新星中微子晕与自感味转换的抑制

Supernova neutrino halo and the suppression of self-induced flavor conversion

Srdjan Sarikas, Irene Tamborra, Georg Raffelt, Lorenz Hüdepohl, Hans-Thomas Janka

摘要:

从超新星(SN)核心流出的中微子偶尔会在包层中散射,产生一个小的“中微子晕”,其角度分布比直接来自核心的主通量要宽得多。Cherry等人(2012)最近指出,在吸积阶段,晕实际上在超过100公里的距离上主导中微子-中微子折射。然而,多角度物质效应(如果角度分布更宽,则会增加)似乎仍然抑制了在吸积阶段期间的自诱导风味转换。

英文摘要:

Neutrinos streaming from a supernova (SN) core occasionally scatter in the envelope, producing a small "neutrino halo" with a much broader angle distribution than the primary flux originating directly from the core. Cherry et al. (2012) have recently pointed out that, during the accretion phase, the halo actually dominates neutrino-neutrino refraction at distances exceeding some 100 km. However, the multiangle matter effect (which increases if the angle distribution is broader) still appears to suppress self-induced flavor conversion during the accretion phase.

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