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Physics Letters B 137 (1984) 125-128
Parity violation in nd capture
M. Avenier, J.F. Cavaignac1, D.H. Koang1, B. Vignon1, R. Hart, R. P. Wilson

We have found an asymmetric angular distribution of the 6.24 MeV photon about the spin direction of the neutron of the form (1+A cos $\theta$, where $\theta$ is the angle between photon momentum and incident neutron spin. We find A=(7.8 ± 3.4) × 10−6 where the error is statistical. In addition there is an overall scale error. The value is larger than predictions based on either Cabbibo or gauge theoretical models, which give values of A between 10−6 and 10−7. The error is too large to claim a discrepancy with theory.
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Physique/Physique Nucléaire Expérimentale