2004/06/07 by H. Stöcker, Horst Stoecker · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1016/j.nuclphysa.2004.12.074
published as Nucl.Phys.A750:121-147,2005 · 19 pages, 22 figures, Proceedings for RBRC Workshop 'New Discoveries at RHIC - The Strongly Interactive QGP', BNL, NY, May 2004
arxiv created 2004/06/07 · openalex publication_date 2005/01/29 · arxiv updated 2009/12/01 · openalex created_date 2022/05/12 · openalex updated_date 2026/07/28
A critical discussion of the present status of the CERN experiments on charm dynamics and hadron collective flow is given. We emphasize the importance of the flow excitation function from 1 to 50 A⋅GeV: here the hydrodynamic model has predicted the collapse of the v1-flow and of the v2-flow at ∼ 10 A⋅GeV; at 40 A⋅GeV it has been recently observed by the NA49 collaboration. Since hadronic rescattering models predict much larger flow than observed at this energy we interpret this observation as potential evidence for a first order phase transition at high baryon density ρB. A detailed discussion of the collective flow as a barometer for the equation of state (EoS) of hot dense matter at RHIC follows. Additionally, detailed transport studies show that the away-side jet suppression can only partially (< 50%) be due to hadronic rescattering. We, finally, propose upgrades and second generation experiments at RHIC which inspect the first order phase transition in the fragmentation region, i.e. at μB ≈ 400 MeV (y ≈ 4-5), where the collapse of the proton flow should be seen in analogy to the 40 A⋅GeV data. The study of Jet-Wake-riding potentials and Bow shocks -- caused by jets in the QGP formed at RHIC -- can give further information on the equation of state (EoS) and transport coefficients of the Quark Gluon Plasma (QGP).