Pais, A.; Treiman, S.B.; Three-Pion Decay Modes of Neutral K Mesons
Phys. Rev. 106 (1957) 1106;
It is the purpose of this note to point out certain effects which obtain in neutral K-meson decay into pions if it is true that invariance under CP and T, rather than under C, P, T separately, is valid for all weak interactions (C = charge conjugation, P = space inversion, T = time reversal). The effects concern not so much the 2- as the 3-decay mode. (Extracted from the introductory part of the paper.).
Related references See also T. D. Lee and C. N. Yang, Phys. Rev. 105 (1957) 1671;
L. D. Landau, Nucl. Phys. 3 (1957) 127;
A. Salam, Nuovo Cim. 5 (1957) 299;
R. Gatto, Nuovo Cim. 3 (1956) 318;
R. Gatto, Phys. Rev. 106 (1957) 168;
S. Oneda, Nucl. Phys. 3 (1957) 97;
M. Gell-Mann and A. Pais, Phys. Rev. 97 (1955) 1387;
R. H. Dalitz, Phil. Mag. 44 (1953) 1068;
R. H. Dalitz, Phil. Mag. 94 (1954) 1046;
G. A. Snow, Phys. Rev. 103 (1956) 1111;
G. Wentzel, Phys. Rev. 101 (1956) 1215;
H. W. Wyld and S. B. Treiman, Phys. Rev. 106 (1957) 169;
Further proposals for CP invariance.