Comparison of K±N Charge-Exchange Reactions at 8.5 and 13 GeV/c

Le résumé fourni par la source

The cross sections for the line-reversed reaction pairs ${K}^{+}n\ensuremath{\rightarrow}{K}^{0}p$ and ${K}^{\ensuremath{-}}p\ensuremath{\rightarrow}{\overline{K}}^{0}n$, and ${K}^{+}p\ensuremath{\rightarrow}{K}^{0}{\ensuremath{\Delta}}^{++}$ and ${K}^{\ensuremath{-}}n\ensuremath{\rightarrow}{\overline{K}}^{0}{\ensuremath{\Delta}}^{\ensuremath{-}}$ have been determined with high statistics and good relative normalization at 8.36 and 12.8 GeV/c in a spectrometer experiment at Stanford Linear Accelerator Center. The cross sections for the ${K}^{+}$-induced reactions are larger than for the ${K}^{\ensuremath{-}}$, contrary to the expectations of weakly-exchange-degenerate Regge-pole models. The ratio of the reaction cross sections is about the same as at lower energies and shows little change with momentum transfer.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.