Transverse energy per charged particle at relativistic energies from a statistical model with expansion

Abstract

Transverse energy and charged particle pseudorapidity densities at midrapidity and their ratio, $d{E}_T/d\eta {\mid }_{mid}/d{N}_{ch}/d\eta {|}_{mid}$, are evaluated in a statistical model with longitudinal and transverse flows for the wide range of colliders, from AGS to RHIC at $\sqrt{s_{NN}}=200$ GeV. Evaluations are done at freeze-out parameters established independently from fits to observed particle yields and $p_T$ spectra. Decays of hadron resonances are treated thoroughly and are included in derivations of $d{E}_T/d\eta {|}_{mid}$ and $d{N}_{ch}/d\eta {|}_{mid}$. The predictions of the model agree well with the experimental data. However, some (explicable) overestimation of the ratio has been observed.

Comments: Revtex, 11 pages, 1 figure (included), The revised version with the title changed and new conclusions added, to appear in Eur. Phys. J. A