The difference Δ${\sigma }_T$=σ(↓↑)-σ(↑↑) between the proton-proton total cross sections for protons in pure transverse-spin states, was measured at incident momenta 0.8 to 2.5 GeV/c in experiments performed at the Los Alamos Clinton P. Anderson Meson Physics Facility and the Argonne Zero Gradient Synchrotron. In agreement with other data, peaks were observed at center-of-mass energies of 2.14 and 2.43 GeV/$c^2$, where ${}_{}{}^1{}_{}{}^{}\mathrm{D}_2^{}{}_{}{}^{}$ and ${}_{}{}^1{}_{}{}^{}\mathrm{G}_4^{}{}_{}{}^{}$ dibaryon resonances have been proposed.

• Received 15 October 1984

DOI:https://doi.org/10.1103/PhysRevD.31.966