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Chiral Symmetry and the Parity-Violating $NNπ$ Yukawa Coupling

Shi-Lin Zhu·S. J. Puglia·B. R. Holstein·M. J. Ramsey-Musolf
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Abstract

We construct the complete SU(2) parity-violating (PV) $π, N, Δ$ interaction Lagrangian with one derivative, and calculate the chiral corrections to the PV Yukawa $NNπ$ coupling constant $h_π$ through ${\cal O}(1/Λ_χ^3)$ in the leading order of heavy baryon expansion. We discuss the relationship between the renormalized $\hpi$, the measured value of $\hpi$, and the corresponding quantity calculated microscopically from the Standard Model four-quark PV interaction.

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Shi-Lin Zhu, S. J. Puglia, B. R. Holstein, M. J. Ramsey-Musolf. 2000-05-28. Chiral Symmetry and the Parity-Violating $NNπ$ Yukawa Coupling. https://doi.org/10.1103/physrevd.63.033006

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