Prog. Theor. Phys. Vol. 38 No. 2 (1967) pp. 472-475
Helicity Coupling Constant
Department of Physics, University of Tokyo, Tokyo
(Received March 2, 1967)
Introducing the helicity coupling constant, we show that we can easily calculate scattering amplitudes and decay probabilities of processes involving arbitrary spin, only by multiplying the helicity coupling constants.
DOI : 10.1143/PTP.38.472
- Similar problems have been discussed by S. Weinberg and L. Durand III et al. However, their approaches are different from ours.
S. Weinberg, Phys. Rev. 133 (1964), B1318[APS];
ibid. 134 (1964), B882[APS].
L. Durand III, P. C. Decelles and P. B. Marr, Phys. Rev. 126 (1962), 1882[APS].
The author would like to thank Prof. Y. Hara and Prof. T. Kotani for their kindness of informing him of these references.
M. Jacob and G. C. Wick, Ann. of Phys. 7 (1959), 404[CrossRef]. The notation and the phases of us is the same as those.
- If m3 < m1+m2, pb and pc are complex. But we can obtain the correct results, if we calculate as if m3 > m1+m2.
Citing Article(s) :
Progress of Theoretical Physics Vol. 38 No. 4 (1967) pp. 933-936
Superconvergence Relations for the πN Scattering Amplitudes at Fixed u