Measurements of particle spectra in diffractive proton-proton collisions with the STAR detector at RHIC

TL;DR

This paper reports measurements of particle spectra in diffractive proton-proton collisions at RHIC, using the STAR detector to analyze particle production, identification, and baryon number transfer in diffractive processes.

Contribution

It provides new experimental data on particle spectra and baryon asymmetry in diffractive proton-proton collisions at RHIC energies.

Findings

Measured particle spectra for pions and protons in diffraction

Analyzed proton-antiproton asymmetry across rapidity

Studied baryon number transfer in diffractive events

Abstract

We present the inclusive and identified particle (pion, proton and their antiparticle) production in Single Diffraction Dissociation and Central Diffraction processes with the STAR detector at RHIC. The forward-scattered proton(s) are tagged in the STAR Roman Pot system while the charged particle tracks are reconstructed in the STAR Time Projection Chamber. Ionization energy loss and time of flight of charged particles are used for particle identification. In addition, the proton-antiproton production asymmetry as a function of rapidity is measured and used to study the baryon number transfer over a large rapidity interval in Single Diffraction Dissociation.