Parity-nonconserving observables in thermal neutron capture on a proton C. H. Hyun, S. J. Lee, J. Haidenbauer and S. W. Hong Eur. Phys. J. A, 24 1 (2005) 129-135 Published online: 25 February 2005 DOI: 10.1140/epja/i2004-10131-8