6533b830fe1ef96bd1297207
RESEARCH PRODUCT
Transverse spectra of hadrons at RHIC
Kari J. EskolaP.v. RuuskanenSyksy RasanenHarri Niemisubject
Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsNuclear TheoryMesonHigh Energy Physics::PhenomenologyNuclear TheoryHadronFOS: Physical sciencesPerturbative QCDNuclear Theory (nucl-th)Nuclear physicsBaryonPionHigh Energy Physics::ExperimentBaryon numberNuclear ExperimentNucleondescription
We present results on spectra of pions, kaons and (anti)protons from a study of heavy ion collisions using the perturbative QCD + saturation model to calculate the production of initial (transverse) energy and baryon number followed by a hydrodynamic description of the expansion of produced matter. In particular, we study how the hadron spectra and multiplicities depend on the decoupling temperature $\Tdec$ when the low temperature phase contains all hadrons and and hadron resonances with mass below 2 GeV. We show that the spectra and multiplicities of pions, kaons and (anti)protons measured at RHIC in central Au+Au collisions with $\sqrt s=130$ GeV can be obtained with a single decoupling temperature 150$...$160 MeV, common for both the chemical and the kinetic freeze-out.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-10-02 | Nuclear Physics A |