High pT K+/-/π+/- production in p-p collisions at the ISR; strangeness suppression and gluon effects
The ratios of high pT charged kaon to pion production cross sections at √s = 45 and 62 GeV are presented. The values of the K+/-/π+/- ratios are essentially independent of both √s and xT = 2pT/√s and are compatible with a strangeness suppression factor λ = 0.55. By contrast, the K-/π- values fall with xT suggesting a gluonic origin of K-. QCD calculations agrees with the measurements.