A nondiagrammatic calculation of the Rho parameter from heavy fermions
Hong-Hao Zhang
TL;DR
This paper presents a straightforward, diagram-free calculation of how heavy fermions influence the Rho parameter in electroweak theory, using path integrals and chiral Lagrangian formalism.
Contribution
It introduces a novel nondiagrammatic method for evaluating heavy fermion effects on the Rho parameter, simplifying previous diagram-based approaches.
Findings
Demonstrates the nondecoupling effect of heavy fermions on the Rho parameter.
Provides a detailed path integral-based calculation method.
Offers insights into electroweak symmetry breaking effects.
Abstract
A simple nondiagrammatic evaluation of the nondecoupling effect of heavy fermions on the Veltman's 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.
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