K+pInteractions at 100 GeV Using a Hybrid Bubble-Chamber—Spark-Chamber System and a Tagged Beam

Abstract

We studied $K^{+}p$ interactions at 100 GeV with the Fermi National Accelerator Laboratory 30-in. hydrogen bubble chamber and associated spark-chamber system. We find ${\sigma }_{\mathrm{tot}}\left(K^{+}p\right)=18.7\mathrm{}\pm 1.8$ mb and ${\sigma }_{\mathrm{el}}\left(K^{+}p\right)=2.0\mathrm{}\pm 0.4$ mb. We present the charged-multiplicity distribution and its moments, and the charge-transfer distribution. The average inelastic charged multiplicity is $〈n_c〉=6.65\mathrm{}\pm 0.31$ and the two-charged-particle correlation functions are ${f_2}^{\mathrm{cc}}=4.52\mathrm{}\pm 1.32$ and ${f_2}^{--}=0.47\mathrm{}\pm 0.35$.