Fermion Mixing Renormalization and Gauge Invariance
P. Gambino, P. A. Grassi, F. Madricardo
Abstract
We study the renormalization of the fermion mixing matrix in the Standard Model and derive the constraints that must be satisfied to respect gauge invariance to all orders. We demonstrate that the prescription based on the on-shell renormalization conditions is not consistent with the Ward-Takahashi Identities and leads to gauge dependent physical amplitudes. A simple scheme is proposed that satisfies all theoretical requirements and is very convenient for practical calculations.
Create a lesson
Related papers
The LZ inelastic splitting as a probe of anomaly mediation
Seung J. Lee, Taewook Youn
Precision Tokenization for Multi-Modal Data in High Energy Physics
Jeffrey Krupa, Samuel Klein, Nilotpal Kakati et al.
Complete four-loop pressure of cold QED
Aapeli Kärkkäinen, Pablo Navarrete, Mika Nurmela et al.
Long-Distance Contributions to Light Vector Mesons and Radiative Decays of ηc
Xiao-Yu Qi, Qi Wu, Dian-Yong Chen
Utilizing Neural Networks for Solving Functional Renormalization Group Flow Equations
J. Gurzó, G. Fejős
ALP interactions with mesons and baryons at O(1/fa): a general field redefinition invariant approach
Jorge Alda, Stefano Rigolin