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arXiv 0704.0032hep-ph
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探测非标准中微子与超新星中微子的相互作用

Probing non-standard neutrino interactions with supernova neutrinos

A. Esteban-Pretel, R. Tomàs, J. W. F. Valle

摘要:

本文分析了通过探测未来银河系超新星(SN)中产生的中微子来探测非标准中微子相互作用(NSI)的可能性,在三中微子框架下考虑了NSI对中微子通过SN包层传播的影响,特别注意了NSI引起的共振转换,这种共振转换可能发生在最去轻子的内层。我们研究了在兆吨级水切伦科夫探测器中探测NSI效应的可能性,无论是通过$\barν_e$谱中的调制效应,由于(i)通过SN包络的冲击波通道,(ii)电子分数的时间依赖性和(iii)地球物质效应;或者,最后,通过可能的中子化$ν_e$爆发的可探测性。我们发现,由于内部的非结构诱导的共振转换,$\barν_e$光谱可以表现出戏剧性的功能。这发生在几个百分比的非通用NSI强度,以及在几个$\times 10^{-5}$以上的非常小的风味改变NSI。

英文摘要:

We analyze the possibility of probing non-standard neutrino interactions (NSI, for short) through the detection of neutrinos produced in a future galactic supernova (SN).We consider the effect of NSI on the neutrino propagation through the SN envelope within a three-neutrino framework, paying special attention to the inclusion of NSI-induced resonant conversions, which may take place in the most deleptonised inner layers. We study the possibility of detecting NSI effects in a Megaton water Cherenkov detector, either through modulation effects in the $\barν_e$ spectrum due to (i) the passage of shock waves through the SN envelope, (ii) the time dependence of the electron fraction and (iii) the Earth matter effects; or, finally, through the possible detectability of the neutronization $ν_e$ burst. We find that the $\barν_e$ spectrum can exhibit dramatic features due to the internal NSI-induced resonant conversion. This occurs for non-universal NSI strengths of a few %, and for very small flavor-changing NSI above a few$\times 10^{-5}$.

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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