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Paper detail

Subleading corrections to parity violating pion photoproduction

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

preprint2001arXivOpen access
Shi-Lin ZhuS. PugliaB. R. HolsteinM. J. Ramsey-Musolf
hep-exhep-phnucl-exnucl-th
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Shi-Lin ZhuS. PugliaB. R. HolsteinM. J. Ramsey-Musolf

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