Solar and Atmospheric Neutrino Results from Super-Kamiokande

Solar and Atmospheric Neutrino Results from Super-Kamiokande
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超级神冈探测器的太阳和大气中微子结果

DOI:
10.1142/9789812777386_0016
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发表时间:
2002
期刊:
影响因子:
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通讯作者:
T. Kajita
T. Kajita
中科院分区:
--
文献类型:
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作者:
T. Kajita

文献摘要

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介绍了超级神冈探测器关于太阳和大气中微子的最新数据。讨论了它们对中微子质量和混合的约束。目前的太阳中微子数据没有显示出昼夜效应或能谱扭曲的任何证据。这些结果不利于小混合的生活垃圾和真空振荡溶液。大气中微子数据提供了中微子质量和混合的准确信息。这些数据可以用两次风味νµ→ντ振荡来解释:Δm2=(1.5 - 5) × 10- 3ev2和sin22θ > 0.88。
Recent data from Super-Kamiokande on solar and atmospheric neutrinos are presented. Their constraints on neutrino mass and mixing are discussed. The present solar neutrino data do not show any evidence for a day-night effect nor a energy spectrum distortion. These results disfavor the small-mixing MSW and vacuum oscillation solutions. The atmospheric neutrino data give accurate information on neutrino mass and mixing. The data are explained by two flavor νµ→ ντoscillations with Δm2=(1.5 - 5) × 10-3eV2and sin22θ > 0.88.