Science Record

34

O(F’) is additional terms ensuring that the Schrédinger equation is integrable. Since the various terms in O(F’) are proportional to F” with » > 2, their contributions are negligible,

It is found that the maximum average value of cos 8 is 1/5, which agrees with the general conclusion of Lee and Yang™!. When the mean value of cos’ @ takes the maximum value, there then appear simultaneously terms proportional to cos’ 9 and cos’ @ with quite large coefficients. The experimental average value of cos @ for the partially polarized A particle®! is 0.17, but appreciable terms proportional to cos’ 8 and cos’ @ do not exist. Hence, it is very unlikely that the A particle is a particle of spin 3/2 obeying the RaritaSchwinger wave equation.

The details of the investigation will be published elsewhere.

REFERENCES

Hisler, F. et al 1957 Phys. Rev. 108, 1353. [2] Glaser, D. A. 1958 Annual International Conference on High Energy Physics at Cern, 265. Lee, T. D. and Yang, C. N. 1958 Phys. Rev. 109, 1755. Feynman, R. P. and Gell-Mann, M. 1958 P&ys. Rev. 109, 193. Sudarshan, G. and Marshak, R. E. 1958 Phys. Rev. 109, 1860. Rarita, W. and Schwinger 1941 J. Phys. Rev. 60, 69.