Observation of Increasing Charged Multiplicity as a Function of Transverse Momentum inp+pπ++MMat 28.5 GeV/c

Abstract
We have measured the mean charged multiplicity n¯c as a function of the transverse momentum p of a forward π+ meson for fixed missing mass MM in the reaction p+pπ++MM using the multiparticle Argo spectrometer system. We observe an increase similar to that seen in p+pp+MM at the same incident energy.