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arXiv 2009.01684hep-phhep-ex
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宇宙学遗迹中微子的宇称破缺和手征振荡

Parity Violation and Chiral Oscillation of Cosmological Relic Neutrinos

Shao-Feng Ge, Pedro Pasquini

摘要:

传统的中微子振荡的推导是将中微子质量本征态看作具有整体演化相位的平面波。然而,由于弱相互作用的宇称破坏性质,只能产生左手征中微子作为初始条件。另一方面,中微子质量项将左手征分量与右手征分量联系起来,并必然导致后者通过振荡产生。这种手征振荡对宇宙学遗迹中微子的探测具有重要意义。事件发生率比常规预测降低了2倍。

英文摘要:

The conventional derivation of neutrino oscillation treats neutrino mass eigenstate as plane wave with an overall evolution phase. Nevertheless, due to the intrinsic parity-violating nature of weak interactions, only the left-chiral neutrino can be produced as initial condition. On the other hand, the neutrino mass term connects the left-chiral component to the right-chiral one and unavoidably leads to generation of the later through oscillation. This chiral oscillation has significant consequences on the detection of the cosmological relic neutrinos. The event rate is reduced by a factor of 2 than the conventional prediction.

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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