A pitfall in applying non-anticommuting $γ_5$ in $q\overline{q} \rightarrow ZH$ amplitudes
Taushif Ahmed
SciPost Phys. Proc. 7, 008 (2022) · published 20 June 2022
- doi: 10.21468/SciPostPhysProc.7.008
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Abstract
In computing the two-loop QCD corrections to a class of Feynman diagrams for the process $q\overline{q} \rightarrow ZH$ in Higgs effective field theory, we discover a striking phenomenon. We find the need for an additional local composite operator in the renormalised Lagrangian while employing a non-anticommuting $\gamma_5$ in dimensional regularisation. The computation using anticommuting $\gamma_5$, however, does not require any such amendment.
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Funder for the research work leading to this publication
- Horizon 2020 (through Organization: European Commission [EC])