6533b857fe1ef96bd12b3c8e
RESEARCH PRODUCT
Dependence of hadron spectra on decoupling temperature and resonance contributions
Harri NiemiSyksy RasanenKari J. EskolaKari J. EskolaP.v. RuuskanenP.v. Ruuskanensubject
PhysicsNuclear and High Energy PhysicsParticle physicsNuclear TheoryHadronNuclear TheoryFOS: Physical sciencesInversePerturbative QCDDecoupling (cosmology)Spectral lineNuclear Theory (nucl-th)High Energy Physics - PhenomenologyTransverse planeHigh Energy Physics - Phenomenology (hep-ph)PionHigh Energy Physics::ExperimentBaryon numberNuclear Experimentdescription
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 $\sqrt s=130 A$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 $$ of hadrons which increase with decreasing $\Tdec$. The origin of this result is discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-07-01 | Physics Letters B |