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arXiv 2201.00840hep-ph
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中微子有效理论中的单圈匹配条件

One-Loop Matching Conditions in Neutrino Effective Theory

Tommy Ohlsson, Marcus Pernow

摘要:

基于I型跷跷板机制,我们研究了充分理论和有效理论之间的匹配条件和阈值修正。在一般情况下,使用一个直观的费曼数学方法,我们计算的振幅之前和之后的重右手中微子在匹配的尺度积分。特别是,我们推导出完整的和有效的理论之间的单回路匹配条件。参数的匹配条件受相应顶点的单圈修正以及Higgs场和轻子场的波函数修正的影响。我们的研究结果与早期的结果的基础上的功能方法。

英文摘要:

We investigate matching conditions and threshold corrections between full and effective theories based on the type I seesaw mechanism. In general, using an intuitive Feynman diagrammatical approach, we compute the amplitudes before and after integrating out heavy right-handed neutrinos at the matching scale. In particular, we derive the one-loop matching conditions between the full and the effective theories. The matching conditions of the parameters are influenced by one-loop corrections to the corresponding vertices as well as wave function corrections for the Higgs and the lepton fields. Our results are comparable to earlier results based on a functional approach.

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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