Taking the tri-bimaximal flavor mixing pattern as a particular basis, we propose a new way to expand the unitary Pontecorvo-Maki-Nakagawa-Sakata (PMNS) lepton flavor mixing matrix in powers of the magnitude of its smallest element . Such a Wolfenstein-like parametrization of allows us to easily describe the salient features and fine structures of flavor mixing and CP violation, both in vacuum and in matter.

中文翻译：

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一种新的类似德军总部式的轻子风味混合扩展，以了解其精细结构


以三双极大风味混合模式为特定基础，我们提出了一种新方法，以最小元素 的量级来扩展酉 Pontecorvo-Maki-Nakakawa-Sakata (PMNS) 轻子风味混合矩阵。这种类似德军总部的参数化使我们能够轻松描述真空和物质中风味混合和 CP 破坏的显着特征和精细结构。