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Prog. Theor. Phys. Vol. 35 No. 3 (1966) pp. 432-439

[ Full Text PDF : FREE ACCESS (431K) ]

Possible C and T Violation in the Photo-Production of Neutral Pion

Takeshi Ebata and Kichiro Hiida

Institute for Nuclear Study, University of Tokyo, Tanashi-machi, Kitatama-gun, Tokyo

(Received November 15, 1965)

Abstract:

To estimate an upper limit of possible C and T violation in the electromagnetic interaction of hadrons, the photo-protuction of neutral pion is reanalysed.


URL : http://ptp.ipap.jp/link?PTP/35/432/
DOI : 10.1143/PTP.35.432

[ Full Text PDF : FREE ACCESS (431K) ] Citation:

References:

  1. J. H. Christenson, J. W. Cronin, V. L. Fitch and R. Turlay, Phys. Rev. Lett. 13 (1964), 138[APS].
    W. Galbraith, G. Manning, A. E. Taylor, B. D. Jones, J. Malos, A. Astbury, N. H. Lipman and T. G. Walker, Phys. Rev. Lett. 14 (1965), 383[APS].
    X. de Bouard, D. Dekkers, B. Jordan, R. Mermod, T. R. Willitts, K. Winter, P. Scharff, L. Valentein, M. Vivargent and M. Bott-Bodenhausen, Phys. Lett. 15 (1965), 58[CrossRef].
  2. The CPT theorem is assumed throughout.
  3. N. F. Ramsey, presented at the International Conference on High Energy Physics held at Dubna, 1964.
  4. J. Bernstein, G. Feinberg and T. D. Lee, Phys. Rev. 139 (1965), B1650[APS].
  5. For further experimental evidences, for example, see
    A. Rittenberg and G. R. Kalbfleisch, Phys. Rev. Lett. 15 (1965), 556[APS].
  6. G. F. Chew, M. L. Goldberger, F. E. Low and Y. Nambu, Phys. Rev. 106 (1957), 1345[APS].
    Hereafter this article will be cited as CGLN.
  7. Hereafter, as far as possible, the same notation as in CGLN will be used.
  8. The T violating parts A2, B2, C2 and D2 may, in principle, include isotensor parts. Since we have a special interest in the γ+ p → π0 + p process alone, as was explained, the isotopic spin dependence of A, B, C and D will not be specified when all iso-scalar, iso-vector and possibly iso-tensor parts contribute.
  9. Using similar method, we may infer similar crossing relations also for the T violating parts of other photo-pion processes.
  10. Although the meaning of the maximal violation is not so clear when the primary interactions include derivatives.
  11. For example, G. Höhler and A. Müllenstein, Z. Phys. 157 (1959), 30.
  12. Various analyses suggest that -0.5 \lesssim MN(+) \lesssim 0.
    See, for example reference 11) or
    J. S. Ball, Phys. Rev. 124 (1961), 2014[APS].
    The uncertainty of B1 due to this term is less than 5 % in (18) below.
  13. L. D. Roper, L. M. Wright and B. T. Feld, Phys. Rev. 138 (1965), B190[APS].
  14. See reference 11). Unfortunately, there is no direct determination of B at (Eγ)Lab = 335 Mev, which corresponds to ω= ωr. The value of (19) is the interpolated value among the neighboring measurements.
  15. A. H. Rosenfeld, A. Barbaro-Galtieri, W. H. Barkas, P. L. Bastien, J. Kirz and M. Roos, UCRL-8030 (1965).
  16. This is the only Lagrangian, which can contribute to the process considered.
  17. K. Dietz and G. von Gehlen, preprint.

Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 37 No. 5 (1967) pp. 986-1002 :
    Interpretation of η→3π and K→2π Meso-Strong Interactions
    Seitaro Nakamura, Shigeo Sato, Masataka Igarashi, Takeo Inami, Nobuyuki Murai and Akira Sato

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