Affiliation:
1. AGH University of Science and Technology
Abstract
We present results on the inclusive and identified (pion, kaon,
proton and their antiparticles) charged-particle production in single
diffractive (SD) dissociation process in proton-proton collisions at
\sqrt{s}=200s=200
GeV with the STAR detector at RHIC. The forward-scattered proton is
measured in the Roman Pot (RP) system, while the charged particle tracks
are reconstructed in the STAR Time Projection Chamber. The
proton-antiproton production asymmetry is measured to study the baryon
number transfer over a large rapidity interval in SD process. In
addition, K/\piK/π
ratio is measured, showing a larger strangeness production at
p_T>0.5pT>0.5
GeV/\mathit{c}𝑐
compared to measurements in inclusive proton-proton collisions.