Prog. Theor. Phys. Vol. 35 No. 3 (1966) pp. 432-439
Possible C and T Violation in the Photo-Production of Neutral Pion
Institute for Nuclear Study, University of Tokyo, Tanashi-machi, Kitatama-gun, Tokyo
(Received November 15, 1965)
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.
DOI : 10.1143/PTP.35.432
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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].
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- The CPT theorem is assumed throughout.
- N. F. Ramsey, presented at the International Conference on High Energy Physics held at Dubna, 1964.
J. Bernstein, G. Feinberg and T. D. Lee, Phys. Rev. 139 (1965), B1650[APS].
- For further experimental evidences, for example, see
A. Rittenberg and G. R. Kalbfleisch, Phys. Rev. Lett. 15 (1965), 556[APS].
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.
- Hereafter, as far as possible, the same notation as in CGLN will be used.
- 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.
- Using similar method, we may infer similar crossing relations also for the T violating parts of other photo-pion processes.
- Although the meaning of the maximal violation is not so clear when the primary interactions include derivatives.
- For example, G. Höhler and A. Müllenstein, Z. Phys. 157 (1959), 30.
- 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.
L. D. Roper, L. M. Wright and B. T. Feld, Phys. Rev. 138 (1965), B190[APS].
- 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.
- A. H. Rosenfeld, A. Barbaro-Galtieri, W. H. Barkas, P. L. Bastien, J. Kirz and M. Roos, UCRL-8030 (1965).
- This is the only Lagrangian, which can contribute to the process considered.
- K. Dietz and G. von Gehlen, preprint.
Citing Article(s) :
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