Possible <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>CP</mi></math></span> Violation in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>K</mi></mrow><mrow><mo>±</mo></mrow></msup></mrow><mo>→</mo><mrow><msup><mrow><mi>π</mi></mrow><mrow><mo>±</mo></mrow></msup></mrow><mi>γ</mi><mi>γ</mi></math></span>

H. H. Chen; S. Y. Lee

doi:10.1103/PhysRevD.3.2172

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Possible $CP$ Violation in $K^{\pm} \to π^{\pm} γ γ$

H. H. Chen^*

S. Y. Lee^†

Physics Department, University of California, Irvine 92664

Physics Department, University of California, Los Angeles 90024

^*Research supported by the U. S. Atomic Energy Commission.
^†Work supported in part by the National Science Foundation.

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Phys. Rev. D 3, 2172 – Published 1 May, 1971

DOI: https://doi.org/10.1103/PhysRevD.3.2172

Abstract

A comparison of the decays $K^{\pm} \to π^{\pm} γ γ$ for the $2 γ$ invariant mass near the $π^{0}$ mass may show a relatively large asymmetry which is indicative of $CP$ violation. This is shown in a simple phenomenological analysis of these decays. Model estimates of the magnitude of this effect are also given.

References (15)

G. Lüders and B. Zumino, Phys. Rev. 106, 385 (1957)
T. D. Lee and C. S. Wu, Ann. Rev. Nucl. Sci. 16, 471 (1966) G. Costa and P. K. Kabir, Phys. Rev. Letters 18, 429 (1967) N. Christ, Phys. Rev. 159, 1292 (1967) [8]
M. Chen et al., Phys. Rev. Letters 20, 73 (1968) J. H. Klems, R. H. Hildebrand, and R. Stiening, ibid. 25, 473 (1970)
M. Gell-Mann and A. Pais, in Proceedings of the 1954 Glasgow Conference on Nuclear and Meson Physics, edited by E. H. Bellamy and R. G. Moorhouse (Pergamon, London, 1954)
G. Fäldt, B. Petersson, and H. Pilkuhn, Nucl. Phys. B3, 234 (1967)
Y. Fujii, Phys. Rev. Letters 17, 613 (1966) S. Okubo, R. E. Marshak, and V. S. Mathur, ibid. 19, 407 (1967) Y. Hara and Y. Nambu, ibid. 16, 875 (1966) N. Cabibbo and R. Gatto, ibid. 5, 382 (1960)
G. Oppo and S. Oneda, Phys. Rev. 160, 1397 (1967) [6]
([2]) Maltsev et al., Yadern Fiz. 10, 1195 (1969) [Sov. J. Nucl. Phys. 10, 678 (1970)] S. Barshay, Phys. Rev. Letters 18, 515 (1967)
S. Treiman, Comments Nucl. and Particle Phys. 2, 68 (1968)
J. Cronin, in Proceedings of the Fourteenth International Conference on High-Energy Physics, Vienna, 1968, edited by J. Prentki and J. Steinberger (CERN, Geneva, 1968)
[6]
I. Lapidus, Nuovo Cimento 46A, 668 (1966) [5]
Omitted endnote
Omitted endnote
T. D. Lee, Columbia University report (unpublished)

[c1] G. Lüders and B. Zumino, Phys. Rev. 106, 385 (1957)

[c2] T. D. Lee and C. S. Wu, Ann. Rev. Nucl. Sci. 16, 471 (1966) G. Costa and P. K. Kabir, Phys. Rev. Letters 18, 429 (1967) N. Christ, Phys. Rev. 159, 1292 (1967) [8]

[c3] M. Chen et al., Phys. Rev. Letters 20, 73 (1968) J. H. Klems, R. H. Hildebrand, and R. Stiening, ibid. 25, 473 (1970)

[c4] M. Gell-Mann and A. Pais, in Proceedings of the 1954 Glasgow Conference on Nuclear and Meson Physics, edited by E. H. Bellamy and R. G. Moorhouse (Pergamon, London, 1954)

[c5] G. Fäldt, B. Petersson, and H. Pilkuhn, Nucl. Phys. B3, 234 (1967)

[c6] Y. Fujii, Phys. Rev. Letters 17, 613 (1966) S. Okubo, R. E. Marshak, and V. S. Mathur, ibid. 19, 407 (1967) Y. Hara and Y. Nambu, ibid. 16, 875 (1966) N. Cabibbo and R. Gatto, ibid. 5, 382 (1960)

[c7] G. Oppo and S. Oneda, Phys. Rev. 160, 1397 (1967) [6]

[c8] ([2]) Maltsev et al., Yadern Fiz. 10, 1195 (1969) [Sov. J. Nucl. Phys. 10, 678 (1970)] S. Barshay, Phys. Rev. Letters 18, 515 (1967)

[c9] S. Treiman, Comments Nucl. and Particle Phys. 2, 68 (1968)

[c10] J. Cronin, in Proceedings of the Fourteenth International Conference on High-Energy Physics, Vienna, 1968, edited by J. Prentki and J. Steinberger (CERN, Geneva, 1968)

[c11] [6]

[c12] I. Lapidus, Nuovo Cimento 46A, 668 (1966) [5]

[c13] Omitted endnote

[c14] Omitted endnote

[c15] T. D. Lee, Columbia University report (unpublished)

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Possible $CP$ Violation in $K^{\pm} \to π^{\pm} γ γ$

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Possible CP Violation in K±→π±γγ

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References (15)

Possible $CP$ Violation in $K^{\pm} \to π^{\pm} γ γ$