Multiplicity dependence of the average transverse momentum in π+ p, K+ p and pp collisions at 250 GeV/c

Abstract The average transverse momentum 〈 P t 〉 has been studied as a function of the charge multiplicity n in π + p, K + p and pp collisions at 250 GeV /c ( s ≈ 22 GeV ) and compared to that at other energies. The effect of cuts in rapidity and p T is demonstrated. A comparison to currently used low- p T models shows that the two-chain dual parton model underestimates the experimentally observed correlation at large p T . The new version of the two-chain LUND-FRITIOF model is better than the first version of this model, but still overestimates the correlation.