The discovery and nondiscovery of parity nonconservation / Allan Franklin.
Abstract:
'In this paper we examine the history of parity nonconservation, or the violation of mirror symmetry in nature, both in 1957 when it was discovered, and in the 1930's, when it could have been discovered, but was not.'
Studies in history and philosophy of science Vol. 10 (1979), p. 201-257