Transverse energy per charged particle at relativistic energies from a statistical model with expansion
Institute of Theoretical Physics, University of Wrocław, Pl. Maksa Borna 9, 50-204, Wrocław, Poland
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Accepted: 3 January 2005
Published online: 26 January 2005
Transverse-energy and charged-particle pseudorapidity densities at midrapidity and their ratio, dE T/dη|mid/dN ch/dη|mid, are evaluated in a statistical model with longitudinal and transverse flows for the wide range of colliders, from AGS to RHIC at = 200 GeV. Evaluations are done at freeze-out parameters obtained from independent fits to observed particle yields and pT spectra. Decays of hadron resonances are treated thoroughly and are included in derivations of dE T/dη|mid and dN ch/dη|mid. The predictions of the model agree well with the experimental data. However, some (explicable) overestimation of the ratio has been observed.
PACS: 25.75.-q Relativistic heavy-ion collisions – / 25.75.Dw Particle and resonance production – / 24.10.Pa Thermal and statistical models – / 24.10.Jv Relativistic models –
© Società Italiana di Fisica and Springer-Verlag, 2005