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Subleading corrections to parity violating pion photoproduction

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

We compute the photon asymmetry $B_γ$ for near threshold parity violating (PV) pion photoproduction through sub-leading order. We show that sub-leading contributions involve a new combination of PV couplings not included in previous analyses of hadronic PV. We argue that existing constraints on the leading order contribution to $B_γ$ -- obtained from the PV $γ$-decay of $^{18}$F -- suggest that the impact of the subleading contributions may be more significant than expected from naturalness argumen

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Shi-Lin Zhu, S. Puglia, B. R. Holstein, M. J. Ramsey-Musolf. 2001-03-22. Subleading corrections to parity violating pion photoproduction. https://doi.org/10.1103/physrevc.64.035502

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