Kaon-Nucleon Total Cross Sections from 0.36 to 0.72 GeV/c

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Abstract

The ${K}^{+}$ and ${K}^{\ensuremath{-}}$ total cross sections were measured on both hydrogen and deuterium at a series of momenta between 360 MeV/c and 720 MeV/c by the transmission method. The data were corrected for Coulomb and decay effects, and the isospin states were extracted. The ${K}^{+}N$, $I=0$ cross section was found to be free from resonances, although the presence of a small dip at about 700 MeV/c was confirmed. No convincing evidence was found for structure in the ${K}^{+}N$, $I=0$ cross section, which was observed to be steeply rising with increasing momentum throughout this range. The prominence of the ${\ensuremath{\Lambda}}^{\ensuremath{'}}(1520)$ was verified in the ${K}^{\ensuremath{-}}N$, $I=0$ system in which no additional structure was seen. In the ${K}^{\ensuremath{-}}N$, $I=1$ system no new structure was clearly established, though there appears to be a small enhancement with a mass about 1600 MeV.

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