Is the QCD Plasma Observable at RHIC with Purely Hadronic Signals?

摘要

A consistent picture of the Au+Au and D+Au, s~(1/2)= 200 A GeV measurements at RHICobtained with the PHENIX, STAR, PHOBOS and BRAHMS detectors was previously developedwith the simulation LUCIFER. The approach was modeled on the early production of a fluid of pre-hadrons after the completion of an initial phase of high energy interactions. A successful descriptionof both measured "jet" suppression and elliptical flow is obtained with a key element being theearly production of pre-mesons which are relatively strongly interacting. The synthesis of these twosignals in a common description puts in doubt the likelihood of direct hadronic observation of-thecolored phase which, for appreciably hard partons, lasts only a short interval~ t_p,while the timefor pre-mesons to hadronise tf is in general considerably longer.