PIRSA:22070001

Gauge Invariance and Finite Counterterms in Chiral Gauge Theories

Cornella, C. (2022). Gauge Invariance and Finite Counterterms in Chiral Gauge Theories. Perimeter Institute. https://pirsa.org/22070001

Cornella, Claudia. Gauge Invariance and Finite Counterterms in Chiral Gauge Theories. Perimeter Institute, Jul. 12, 2022, https://pirsa.org/22070001 

          @misc{ pirsa_PIRSA:22070001,
            doi = {10.48660/22070001},
            url = {https://pirsa.org/22070001},
            author = {Cornella, Claudia},
            keywords = {Particle Physics},
            language = {en},
            title = {Gauge Invariance and Finite Counterterms in Chiral Gauge Theories},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {jul},
            note = {PIRSA:22070001 see, \url{https://pirsa.org}}
          }

Claudia Cornella

Johannes Gutenberg University Mainz

Talk number
PIRSA:22070001
Collection
Talk Type
Subject
Abstract

Any consistent regularization scheme induces an apparent violation of gauge invariance in non-anomalous chiral gauge theories. This violation shows up in perturbative calculations, and can be removed by including appropriate finite counterterms. In this talk I will discuss the derivation of such counterterms for a renormalizable chiral gauge theory.  I will use the background field method, which ensures background gauge invariance in the quantized theory. As a concrete application, I will show the finite counterterm at one loop in the Standard Model, within dimensional regularization and the Breitenlohner-Maison-'t Hooft-Veltman prescription for gamma5. 

Zoom Link: https://pitp.zoom.us/j/95507223984?pwd=Y0FDTEJpNDlVaE9Ba1ZNMURXeS9rdz09