STAR Results from the RHIC Beam Energy Scan-I

Abstract

The Beam Energy Scan (BES) program is being pursued at RHIC to study the QCD phase diagram, and search for the possible QCD phase boundary and possible QCD critical point. The data for Phase-I of the BES program have been collected for Au+Au collisions at center-of-mass energies ($\sqrt{s_{NN}}$) of 7.7, 11.5, 19.6, 27, and 39 GeV. These collision energies allowed the STAR experiment to cover a wide range of baryon chemical potential ${\mu }_B$ (100--400 MeV) in the QCD phase diagram. We report on several interesting results from the BES Phase-I covering the high net-baryon density region. These results shed light on particle production mechanism and freeze-out conditions, first-order phase transition and "turn-off" of QGP signatures, and existence of a critical point in the phase diagram. Finally, we give an outlook for the future BES Phase-II program and a possible fixed target program at STAR.

8 pages, 8 figures, Plenary talk to appear as proceedings of QM2012 conference (August 13-18, 2012) at Washington DC, USA

References in corpus (5)

• The Chiral Magnetic Effect
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations
• Scale for the Phase Diagram of Quantum Chromodynamics
• Charge separation relative to the reaction plane in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV

Cited by in corpus (33)

• Bulk Properties of the Medium Produced in Relativistic Heavy-Ion Collisions from the Beam Energy Scan Program
• Fluctuations of conserved charges in relativistic heavy ion collisions: An introduction
• The chiral phase transition with a chiral chemical potential in the framework of Dyson-Schwinger equations
• Equilibrium Statistical-Thermal Models in High-Energy Physics
• Quark Number Fluctuations at Finite Temperature and Finite Chemical Potential via the Dyson-Schwinger Equation Approach
• An Overview of STAR Experimental Results
• Systematics of Kinetic Freeze-out Properties in High Energy Collisions from STAR
• Holographic Chiral Electric Separation Effect
• Review of Recent Results from the RHIC Beam Energy Scan
• Critical endpoint in the presence of a chiral chemical potential
• Progress in vacuum susceptibilities and their applications to the chiral phase transition of QCD
• Nonequilibrium time evolution of higher order cumulants of conserved charges and event-by-event analysis
• Energy scan/dependence of kinetic freeze-out scenarios of multi-strange and other identified particles in central nucleus-nucleus collisions
• Quark number densities at imaginary chemical potential in $N_f=2$ lattice QCD with Wilson fermions and its model analyses
• Anisotropic flow and flow fluctuations for Au + Au at $\sqrt{s_{NN}}$ = 200 GeV in a multiphase transport model
• Spatial modulation and topological current in holographic QCD matter
• Systematics of chemical freeze-out parameters in heavy-ion collision experiments
• The QCD Critical Point and Related Observables
• Constraining the Particle Production Mechanism in Au+Au Collisions at $\sqrt{s_{NN}}=$ 7.7, 27, and 200 GeV Using A Multi Phase Transport Model
• Effects of finite volume and magnetic fields on thermodynamic properties of quark matter and fluctuations of conserved charges
• Viscous effects on the dynamical evolution of QCD matter during the first-order confinement phase transition in heavy-ion collisions
• Exploring the properties of the phases of QCD matter - research opportunities and priorities for the next decade
• Novel scheme for parametrizing the chemical freeze-out surface in Heavy Ion Collision Experiments
• Study of freeze-out dynamics in STAR at RHIC Beam Energy Scan Program
• Self-similarity of negative particle production from the Beam Energy Scan Program at STAR
• A quasiparticle equation of state with a phenomenological critical point
• Initial conditions of bulk matter in ultrarelativistic nuclear collisions
• Hydrodynamic results on multiplicity fluctuations in heavy-ion collisions
• Formation of light nuclei at chemical freezeout: Description within a statistical thermal model
• Thermodynamical consistency of quasiparticle model at finite baryon density
• Chemical potentials of light flavor quarks from yield ratios of negative to positive particles in Au+Au collisions at RHIC
• NICA-MPD: azimuthal and femtoscopic particle correlations
• Chemical freeze-out systematics of thermal model analysis using hadron yield ratios