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Disintegration of the Deuteron by π + Mesons and the Spin of the π + Meson

1952; American Institute of Physics; Volume: 85; Issue: 4 Linguagem: Inglês

10.1103/physrev.85.523

1536-6065

Donald L. Clark, Arthur Roberts, Richard Wilson,

Scientific Research and Discoveries

The total cross section for the reaction ${\ensuremath{\pi}}^{+}+d\ensuremath{\rightarrow}p+p$ has been measured for an average incident meson energy of 23 Mev. This corresponds to a proton energy of 340 Mev in the inverse reaction $p+p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}+d$ for which the total cross section has been measured by Richman, Cartwright, Peterson, and others. Comparison of these two cross sections, using the theorem of detailed balancing, leads to a determination of the statistical weight, and hence the spin, of the ${\ensuremath{\pi}}^{+}$ meson. The spin turns out to be zero.