Advances at the $\gamma_5$-Frontier

These proceedings discuss the current progress of the no-compromise approach to the dimensional renormalization of chiral gauge theories in the context of the BMHV scheme with non-anticommuting $\gamma_5$. Despite spuriously breaking BRST-invariance in intermediate steps, it is the only scheme which handles the well-known $\gamma_5$-problem mathematically consistently. We begin with a brief motivation, followed by an exposition of our methodology. Specifically, we illustrate the symmetry restoration procedure to obtain the required symmetry-restoring counterterms and provide insights into our computational setups, including recent developments. Building up on this, we present recent results and advances for the multi-loop renormalization of Abelian and non-Abelian chiral gauge theories, before concluding this article with a discussion on prospective implementations of the BMHV regularization in SM-like models.

Authors

Publication Details

Published
2024-09-17
DOI
https://doi.org/10.22323/1.467.0022
Citations
3
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
1.98

Funders

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article

Advances at the $\gamma_5$-Frontier

Paul Kühler, Matthias Weißwange, Dominik Stöckinger
3 citations
Particle physics theoretical and experimental studies
1.98
article

Advances at the $\gamma_5$-Frontier

Paul Kühler, Matthias Weißwange, Dominik Stöckinger
article en
3 citations

Abstract

These proceedings discuss the current progress of the no-compromise approach to the dimensional renormalization of chiral gauge theories in the context of the BMHV scheme with non-anticommuting $\gamma_5$. Despite spuriously breaking BRST-invariance in intermediate steps, it is the only scheme which handles the well-known $\gamma_5$-problem mathematically consistently. We begin with a brief motivation, followed by an exposition of our methodology. Specifically, we illustrate the symmetry restoration procedure to obtain the required symmetry-restoring counterterms and provide insights into our computational setups, including recent developments. Building up on this, we present recent results and advances for the multi-loop renormalization of Abelian and non-Abelian chiral gauge theories, before concluding this article with a discussion on prospective implementations of the BMHV regularization in SM-like models.

Deutsche Forschungsgemeinschaft
Openalex Percentile: Top 9%
Particle physics theoretical and experimental studies
1.98
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