Dependence Of Transverse-Momentum Distributions Of Pi-,S On P Of A Proton In Pp Interactions At 28.5 Gev-Cstar

We present transverse-momentum distributions of ${\ensuremath{\pi}}^{\ensuremath{-}}'\mathrm{s}$ produced in the reaction ${p}_{1}{p}_{2}\ensuremath{\rightarrow}{p}_{3}X$ at 28.5 GeV/c observed by the Multiparticle Argo Spectrometer System. As the transverse momentum of the trigger proton ${p}_{3}$ is raised from 0.4 to 1.6 GeV/c we find that the shape of the ${\ensuremath{\pi}}^{\ensuremath{-}}$ momentum distribution normal to the (${p}_{1}, {p}_{3}$) plane remains unchanged. The shape of the distribution in the plane is also relatively constant but the distribution shifts to balance transverse momentum.