Chronology of Milestone Events in Particle Physics - DORFAN 1967
Chronology of Milestone Events in Particle Physics

DORFAN 1967

Dorfan, D.E.; Enstrom, J.; Raymond, D.; Schwartz, M.; Wojcicki, S.G.; Miller, D.H.; Paciotti, M.;
Charge Asymmetry in the Muonic Decay of the K20
Phys. Rev. Lett. 19 (1967) 987;

Motivation
We report herewith the observation and measurement of a charge asymmetry in the muonic decay of the long-lived neutral K meson (K20). In particular we find the decay rate R+ into + to be larger than the decay rate R into + with the ratio determined as R = R+/R = 1.0081 0.0027 This result, obtained at the Stanford Linear Accelerator Center (SLAC), is a prime facile demonstration of CP noninvariance in K20 decay. It is consistent with theoretical expectations based upon an analysis of experimental data which have been obtained since the first such demonstration by Christenson, Cronin, Fitch, and Turlay. (Extracted from the introductory part of the paper.).

Accelerator SLAC Detectors SLACKLSF

Related references
See also
R. G. Sachs and S. B. Treiman, Phys. Rev. Lett. 8 (1962) 137;
S. Weinberg, Phys. Rev. 110 (1958) 782;
T. D. Lee, R. Oehme, and C. N. Yang, Phys. Rev. 106 (1957) 340;
D. M. Kaplan, Phys. Rev. 139 (1965) B1065;
Analyse data from
X. de Bouard et al., Phys. Rev. Lett. 15 (1965) 58;
W. Galbraith et al., Phys. Rev. Lett. 14 (1965) 383;
J. W. Cronin et al., Phys. Rev. Lett. 18 (1967) 25;
C. Rubbia and J. Steinberger, Phys. Lett. 24B (1967) 531;
M. Bott-Bodenhausen et al., Phys. Lett. 20 (1966) 212;
V. L. Fitch et al., Phys. Rev. Lett. 15 (1965) 73;
T. D. Lee and C. S. Wu, Ann. Rev. Nucl. Sci. 16 (1966) 511;
T. T. Wu and C. N. Yang, Phys. Rev. Lett. 13 (1964) 380;
J. H. Christenson, J. W. Cronin, V. L. Fitch, and R. Turlay, Phys. Rev. Lett. 13 (1964) 138;
J. M. Gaillard et al., Phys. Rev. Lett. 18 (1967) 20;

Reactions
  KL + qnc
  KL + qnc

Particles studied
  KL dec, pw

Record comments
First evidence for CP violation in KL ± decays.
    
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