Parity violation in neutron capture on the proton: determining the weak pion-nucleon coupling

Abstract

We investigate the parity-violating analyzing power in neutron capture on the proton at thermal energies in the framework of chiral effective field theory. By combining this analysis with a previous analysis of parity violation in proton-proton scattering, we are able to extract the size of the weak pion-nucleon coupling constant. The uncertainty is significant and dominated by the experimental error which is expected to be reduced soon.

Published version

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Cited by in corpus (3)

• Towards a unified treatment of $\Delta S=0$ parity violation in low-energy nuclear processes
• QCD Analysis of $\Delta S=0$ Hadronic Parity Violation
• $\Delta S=0$ Hadronic Parity Violation in Next-to-Leading Order QCD: Anomalous Dimension Matrices and Their Implications