The impact of different parameterizations on the interpretation of CP violation in neutrino oscillations

被引:0
作者
Peter B. Denton
Rebekah Pestes
机构
[1] Brookhaven National Laboratory,High Energy Theory Group, Physics Department
[2] Department of Physics,Center for Neutrino Physics
[3] Virginia Tech,undefined
来源
Journal of High Energy Physics | / 2021卷
关键词
CP violation; Neutrino Physics;
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摘要
CP violation in the lepton mass matrix will be probed with good precision in upcoming experiments. The amount of CP violation present in oscillations can be quantified in numerous ways and is typically parameterized by the complex phase δPDG in the standard PDG definition of the lepton mixing matrix. There are additional parameterizations of the lepton mixing matrix as well. Through various examples, we explore how, given the current data, different parameterizations can lead to different conclusions when working with parameterization dependent variables, such as δ. We demonstrate how the smallness of |Ue3| governs the scale of these results. We then demonstrate how δ can be misleading and argue that the Jarlskog is the cleanest means of presenting the amount of CP violation in the lepton sector. We also confirm that, among the different parameterizations considered, the standard PDG parameterization has a number of convenient features.
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