中微子态的纠缠
Entanglement of neutrino states
摘要:
带电π介子衰变产生的μ子和μ子反中微子形成纠缠自旋态。μ子的衰变与左螺旋度触发了μ子反中微子的左螺旋度,以保持μ子和μ子反中微子的零总角动量。这对于反中微子是不允许的,因此在μ介子衰变后,人们不能探测到μ介子反中微子。这种效应可以解释Super-Kamiokande、K2 K、MINOS实验中μ中微子通量的不足。
英文摘要:
Muon and muon antineutrino born in the decay of charged pion form the entangled spin state. The decay of muon with the left helicity triggers the left helicity for muon antineutrino to preserve the null total angular momentum of muon and muon antineutrino. This is forbidden for antineutrino hence one cannot detect the muon antineutrino after the decay of muon. This effect may explain the deficit of muon neutrino flux in the Super-Kamiokande, K2K, MINOS experiments.
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