A nondiagrammatic calculation of the rho parameter from heavy fermions

作者:Zhang; Hong Hao
来源:European Physical Journal C, 2010, 67(1-2): 51-56.
DOI:10.1140/epjc/s10052-010-1271-0

摘要

A simple nondiagrammatic evaluation of the non-decoupling effect of heavy fermions on the Veltman rho parameter is presented in detail. This calculation is based on the path integral approach, the electroweak chiral Lagrangian formalism, and the Schwinger proper time method.