PIRSA:22070001 Scientific Series Particle Physics

DOI10.48660/22070001

Series: Particle Physics

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}}
}

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

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