6533b838fe1ef96bd12a51c8
RESEARCH PRODUCT
Multiplicities and Transverse Energies in Central AA Collisions at RHIC and LHC from pQCD, Saturation and Hydrodynamics
Syksy RasanenKari J. EskolaKari J. EskolaKimmo TuominenP.v. RuuskanenP.v. Ruuskanensubject
PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderNuclear Theory010308 nuclear & particles physicsHadronHigh Energy Physics::PhenomenologyPerturbative QCDFOS: Physical sciencesParton01 natural sciencesResonance (particle physics)Symmetry (physics)Nuclear Theory (nucl-th)Transverse planeHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsSaturation (chemistry)Nuclear ExperimentParticle Physics - Phenomenologydescription
We compute the particle multiplicities and transverse energies at central and nearly central AA collisions at RHIC and LHC. The initial state is computed from perturbative QCD supplemented by the conjecture of saturation of produced partons. The expansion stage is described in terms of hydrodynamics assuming longitudinal boost invariance and azimuthal symmetry. Transverse flow effects, a realistic list of hadrons and resonance decays are included. Comparison with the data of the multiplicities at $\sqrt s=56$ AGeV and 130 AGeV from RHIC is done and predictions for the full RHIC energy and LHC energy are made for the multiplicities and transverse energies. The reduction from the initially released minijet transverse energy to the $E_T$ in the final state is less than in the one-dimensional case but still dramatic: a factor of 2.7 at RHIC, and 3.6 at the LHC.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-04-02 |