Friedman, J.I.; Telegdi, V.L.; Nuclear Emulsion Evidence for Parity Nonconservation in the Decay Chain π+ → μ+ → e+
Phys. Rev. 105 (1957) 1681;
Reprinted in
R. N. Cahn and G. Goldhaber, The Experimental Foundations of Particle Physics, Cambridge Univ. Press (1991) 176.
The Physical Review - the First Hundred Years, AIP Press (1995) CD-ROM.
Abstracts
Preliminary data on 1300 decays in magnetically-shielded emulsions exposed to the Chicago synchrocyclotron are consistent with an angular distribution W(θ) = 1 - 0.12 cos θ. The formation of "muonium'' (μ+ e) may be an important cause of depolarization in such experiments. (Science Abstracts, 1957, 5643. K. H. Barker.).
Accelerator
CHIC-CYC
Detectors EMUL
Related references More (later) information appears in T. D. Lee, R. Oehme, and C. N. Yang, Phys. Rev. 106 (1957) 340;
See also S. Berko and F. Hereford, Rev. of Mod. Phys. 28 (1956) 299;
V. L. Telegdi, J. C. Seng, and D. D. Yovanovitch, Phys. Rev. 104 (1956) 867;
T. D. Lee and C. N. Yang, Phys. Rev. 104 (1956) 254;
Analyse data from R. L. Garwin, L. M. Lederman, and M. Weinrich, Phys. Rev. 105 (1957) 1415;
Reactions
π+ μ+ νμ
angp
μ+e+ anti-νμ νe
angp
Record comments
Confirmation of parity nonconservation in weak decays.