Unitarity and the Phase of the Mixing Parameter in Superweak Theories

Abstract

The Bell-Steinberger unitarity condition is used to discuss the relation between the phase ${\phi }_W$ of the "unitarity sum" appearing in that relation and the Lee-Wolfenstein phase ${\phi }_{\epsilon }$, for which an explicit formula is given in terms of $\left|\epsilon \right|$, ${\gamma }_1$, ${\gamma }_2$, and $m_2-m_1$.