Crucial spin tests of quantum-chromodynamic approaches to large-transverse-momentum processes
Chih Kwan Chen · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 1979
The polarization of the large-${p}_{T}$ reaction $p+p\ensuremath{\rightarrow}\ensuremath{\pi}+X$ is shown to vanish if the perturbative quantum-chromodynamical approach is used. The status of two-spin correlation studies of large-${p}_{T}$ inclusive production processes is clarified, the usefulness of spin correlations of the reaction $p+p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}+{\ensuremath{\pi}}^{+}+X$ in revealing the nature of constituent scattering is discussed, whereas the reaction $p+p\ensuremath{\rightarrow}\ensuremath{\pi}+X$ is less useful for this purpose.