Dependence of hadron spectra on decoupling temperature and resonance contributions

2002/06/30 by K.J. Eskola, K. J. Eskola, H. Niemi +4 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1016/s0370-2693(03)00839-6

published as Phys.Lett. B566 (2003) 187-192 · 4 pages, 2 eps-figures. Section 3 rewritten, table 1 and figure 1 redrawn, 2 references added

arxiv created 2002/12/13 · openalex publication_date 2003/06/30 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Using equilibrium hydrodynamics with initial conditions for the energy and net baryon number densities from the perturbative QCD+saturation model, a good simultaneous description of the measured pion, kaon and (anti)proton spectra in central Au+Au collisions at s=130A GeV is found with a single decoupling temperature Tdec=150–160 MeV. The interplay between the resonance content of the EoS and the development of the transverse flow leads to inverse slopes and 〈pT〉 of hadrons which increase with decreasing Tdec. The origin of this result is discussed.

Citations

• Manifestations of high density QCD in the first RHIC data

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