Energy dependence of spin-spin effects inp−pelastic scattering at90°c.m.
Citations Over TimeTop 17% of 1981 papers
Abstract
The energy dependence of the spin-parallel and spin-antiparallel cross sections for ${p}_{\ensuremath{\uparrow}}+{p}_{\ensuremath{\uparrow}}\ensuremath{\rightarrow}p+p$ at ${90\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}_{\mathrm{c}.\mathrm{m}.}$ was measured for beam momenta between 6 and 12.75 GeV/c. The ratio ${(\frac{d\ensuremath{\sigma}}{\mathrm{dt}})}_{\mathrm{parallel}}:{(\frac{d\ensuremath{\sigma}}{\mathrm{dt}})}_{\mathrm{antiparallel}}$ at 90\ifmmode^\circ\else\textdegree\fi{} is about 1.2 up to 8 GeV/c and then increases rapidly to a value of almost 4 near 11 GeV/c. Our data indicate that this ratio may depend only on the variable ${{P}_{\ensuremath{\perp}}}^{2}$, and suggests that the ratio may reach a limiting value of about 4 for large ${{P}_{\ensuremath{\perp}}}^{2}$.
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