Abstract
THE meson theory in its present form exhibits a number of difficulties which are connected with the particular way in which the conservation of charge and the spin enter the interaction between mesons and the nuclear particles. The expression for the anomalous magnetic moment of the proton and neutron1, for example, diverges as . The cross-section for the scattering of mesons by a nucleus is found to be very much larger than experiments permit and increases rapidly with increasing energy. This would be incompatible with the high penetrating power of cosmic ray mesons.
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References
Fröhlich, Heitler and Kemmer, Proc. Roy. Soc., A, 166, 154 (1938). Yukawa, Sakata and Taketani, Proc. Math. Phys. Soc. Japan, 20, 319 (1938).
Heitler, Proc. Roy. Soc., A, 166, 529 (1938), and Report of the Eighth Solvay Conference, Brussels, in the press, where the reasons for the high cross-section are analysed.
Wilson, Proc. Roy. Soc., in the press. I am very much indebted to Dr. Wilson for having sent me his MS. before publication.
This possibility was first mentioned to me Bhabha in a private discussion in connexion with his classical theory for neutral mesons. The whole problem was very much clarified in discussions with Bhabha, Fröhlich and Kemmer.
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HEITLER, W. Scattering of Mesons and the Magnetic Moments of Proton and Neutron. Nature 145, 29–30 (1940). https://doi.org/10.1038/145029b0
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DOI: https://doi.org/10.1038/145029b0
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