Dependence of hadron spectra on decoupling temperature and resonance contributions

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 $\sqrt{s}=130A$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 $<p_T>$ of hadrons which increase with decreasing $\Tdec$. The origin of this result is discussed.

4 pages, 2 eps-figures. Section 3 rewritten, table 1 and figure 1 redrawn, 2 references added

References in corpus (13)

• Elliptic flow at SPS and RHIC: from kinetic transport to hydrodynamics
• Manifestations of high density QCD in the first RHIC data
• Early thermalization at RHIC
• Centrality dependence of pi^[+/-], K^[+/-], p and p-bar production from sqrt(s_NN)=130 GeV Au + Au collisions at RHIC
• Centrality Dependence of Charged Particle Multiplicity in Au-Au Collisions at sqrt(s_NN)=130 GeV
• Coherent gluon production in very high energy heavy ion collisions
• Description of the RHIC p_T-spectra in a thermal model with expansion
• Multiplicity distribution and spectra of negatively charged hadrons in Au+Au collisions at sqrt(s_nn) = 130 GeV
• Energy dependence of particle multiplicities in central Au+Au collisions
• Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV
• Multiplicities and Transverse Energies in Central AA Collisions at RHIC and LHC from pQCD, Saturation and Hydrodynamics
• Strangeness production in heavy ion collisions
• From quark-gluon plasma to hadron spectra

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