First Precision Measurement of the Parity Violating Asymmetry in Cold Neutron Capture on ${}^3$He

n3He Collaboration, M. T. Gericke, S. Baeßler +26

We report the first precision measurement of the parity-violating asymmetry in the direction of proton emission with respect to the neutron spin, in the reaction $^{3}\mathrm{He}(\…