Thermal analysis of particle yields from RQMD

The thermal model is often used to characterize the hadronic final state of relativistic heavy-ion collisions. We investigate the bias of incomplete m omentum space information on the extraction of thermal parameters. We use R QMD(v2.3) to generate full momentum space multiplicities. Then we apply cut s in rapidity and use measured subsets of stable particles for our investig ation. We find that using the full set of stable particles decreases consid erable the quality of the thermal fit compared to fits using subsets of par ticles typically measured in experiments. The particles responsible for mak ing the fit worse are the multi-strange baryons and anti-baryons. Also rapi dity cuts on particle multiplicities lead to worse fits.