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首页> 外文期刊>Physics Letters, B. Nuclear Physics and High Energy Physics >CP and T violation in neutrino oscillations and invariance of Jarlskog's determinant to matter effects
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CP and T violation in neutrino oscillations and invariance of Jarlskog's determinant to matter effects

机译:中微子振荡中的CP和T违反以及Jarlskog决定因素对物质影响的不变性

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摘要

Terrestrial matter effects in neutrino propagation are T-invariant, so that any observed T violation when neutrinos pass through the Earth, such as an asymmetry between the transition probabilities P(nu(mu) --> nu(e)) and P(nu(e) --> nu(mu)), would be a direct indication of T violation at the fundamental level. Matter effects do however modify the magnitudes of T-violating asymmetries, and it has long been known that resonant enhancement can lead to large effects for a range of plausible values of the relevant parameters. We note that the determinant of the commutator of the lepton mass matrices is invariant under matter effects and use this fact to derive a new expression for the T-violating asymmetries of neutrinos propagating through matter. We give some examples which could have physical relevance. (C) 2000 Published by Elsevier Science B.V. All rights reserved. [References: 60]
机译:中微子传播中的地面物质影响是T不变的,因此中微子穿过地球时观察到的任何T违规,例如跃迁概率P(nu(mu)-> nu(e))和P(nu (e)-> nu(mu)),将直接表明从根本上违反T。但是,物质效应确实会改变违反T的不对称性的大小,并且人们早就知道,对于一系列相关参数的合理值,共振增强会导致较大的效应。我们注意到,轻子质量矩阵的交换子的行列式在物质影响下是不变的,并利用这一事实来推导通过物质传播的中微子的T违反T不对称性的新表达式。我们举一些可能与身体相关的例子。 (C)2000,Elsevier Science B.V.保留所有权利。 [参考:60]

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