An Overview of STAR Experimental Results

Abstract

With large acceptance and excellent particle identification, STAR is one of the best mid-rapidity collider experiments for studying high-energy nuclear collisions. The STAR experiment provides full information on initial conditions, properties of the hot and dense medium as well as the properties at freeze-out. In Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV, STAR's focus is on the nature of the sQGP produced at RHIC. In order to explore the properties of the QCD phase diagram, since 2010, the experiment has collected sizable data sets of Au+Au collisions at the lower collision energy region where the net-baryon density is large. At the 2014 Quark Matter Conference, the STAR experiment made 16 presentations that cover physics topics including {\it collective dynamics}, {\it electromagnetic probes}, {\it heavy flavor}, {\it initial state physics}, {\it jets}, {\it QCD phase diagram}, {\it thermodynamics and hadron chemistry}, and {\it future experimental facilities, upgrades, and instrumentation} [1-16]. In this overview we will highlight a few results from the STAR experiment, especially those from the recent measurements of the RHIC beam energy scan program. At the end, instead of a summary, we will discuss STAR's near future physics programs at RHIC.

arXiv comment8 pages, 8 figures

References in corpus (49)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• New Forms of QCD Matter Discovered at RHIC
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Critical point of QCD at finite T and μ, lattice results for physical quark masses
• Non-Gaussian fluctuations near the QCD critical point
• Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions
• Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation
• The Chiral Magnetic Effect and Anomaly-Induced Transport
• Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC
• On the sign of kurtosis near the QCD critical point
• Erratum: Transverse momentum and centrality dependence of high-\pt\ non-photonic electron suppression in Au+Au collisions at \sqrtsNN\ = 200 GeV
• Parity violation in hot QCD: how to detect it
• Event-by-event gluon multiplicity, energy density and eccentricities at RHIC and LHC
• Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC
• Scale for the Phase Diagram of Quantum Chromodynamics
• Testing the chiral magnetic and chiral vortical effects in heavy ion collisions
• Charge separation relative to the reaction plane in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Baryon Number, Strangeness and Electric Charge Fluctuations in QCD at High Temperature
• Third moments of conserved charges as probes of QCD phase structure
• ${\mathbf{D}}_{\mathbf{s}}$-Meson as Quantitative Probe of Diffusion and Hadronization in Nuclear Collisions
• Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC
• Thermal Bottomonium Suppression at RHIC and LHC
• J/psi Production in Quark-Gluon Plasma
• Energy dependence of charged pion, proton and anti-proton transverse momentum spectra for Au+Au collisions at \sqrt{s_NN} = 62.4 and 200 GeV
• Bottomonia in the Quark-Gluon Plasma and their Production at RHIC and LHC
• Testing the Chiral Magnetic Effect with Central U+U collisions
• Lattice QCD predictions for shapes of event distributions along the freezeout curve in heavy-ion collisions
• Conserved number fluctuations in a hadron resonance gas model
• Volume Fluctuation and Autocorrelation Effects in the Moment Analysis of Net-proton Multiplicity Distributions in Heavy-Ion Collisions
• The horn, the hadron mass spectrum and the QCD phase diagram - the statistical model of hadron production in central nucleus-nucleus collisions
• Suppression of Upsilon Production in d+Au and Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Dielectron Mass Spectra from Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV
• Measurement of longitudinal spin asymmetries for weak boson production in polarized proton-proton collisions at RHIC
• STAR Results from the RHIC Beam Energy Scan-I
• Predictions of elliptic flow and nuclear modification factor from 200 GeV U + U collisions at RHIC
• The QCD Critical Point : marching towards continuum
• Baseline for the cumulants of net-proton distributions at STAR
• Beam Energy Dependence of Dielectron Production in Au+Au Collisions from STAR at RHIC
• Overview of ALICE Results at Quark Matter 2014
• Direct photon production in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV at STAR
• PHENIX Highlights
• Initial state geometry and fluctuations in Au+Au, Cu+Au and U+U collisions at RHIC
• Search for "Ridge" in d+Au Collisions at RHIC by STAR
• Multi-strange baryon production in pp, p-Pb and Pb-Pb collisions measured with ALICE at the LHC

Cited by in corpus (39)

• Properties of hot and dense matter from relativistic heavy ion collisions
• Tomography of the Quark-Gluon-Plasma by Charm Quarks
• Chiral vortical wave and induced flavor charge transport in a rotating quark-gluon plasma
• Magnetic Field Effect on Charmonium Production in High Energy Nuclear Collisions
• Chiral symmetry restoration versus deconfinement in heavy-ion collisions at high baryon density
• Cumulants and Correlation Functions vs the QCD phase diagram
• Kinetic freeze-out temperatures in central and peripheral collisions: Which one is larger?
• Kinetic freeze-out temperature and flow velocity extracted from transverse momentum spectra of final-state light flavor particles produced in collisions at RHIC and LHC
• Multiplicity dependent and non-binomial efficiency corrections for particle number cumulants
• Initial, effective, and kinetic freeze-out temperatures from transverse momentum spectra in high energy proton(deuteron)-nucleus and nucleus-nucleus collisions
• Disentangling random thermal motion of particles and collective expansion of source from transverse momentum spectra in high energy collisions
• Effective (kinetic freeze-out) temperature, transverse flow velocity and kinetic freeze-out volume in high energy collisions
• Excitation Functions of Tsallis-like Parameters in High-Energy Nucleus-Nucleus Collisions
• Large proton cumulants from the superposition of ordinary multiplicity distributions
• Effects of coalescence and isospin symmetry on the freezeout of light nuclei and their anti-particles
• Conserved charge fluctuations are not conserved during the hadronic phase
• $K^{\ast }$ vector meson resonances dynamics in heavy-ion collisions
• Effect of finite particle number sampling on baryon number fluctuations
• The cumulants of the baryon number from central Au+Au collision at $E_{lab}$= 1.23 GeV$/$nucleon reveal the nuclear mean-field potentials
• Energy loss of heavy quarks and $B$ and $D$ meson spectra in PbPb collisions at LHC energies
• Recent developments in the theory of electromagnetic probes in relativistic heavy-ion collisions
• Nuclear interactions and net-proton number fluctuations in heavy ion collisions at the SIS18 accelerator
• Effect of an electromagnetic field on the spectra and elliptic flow of particles
• What are the early degrees of freedom in ultra-relativistic nucleus-nucleus collisions?
• Excitation functions of related parameters from transverse momentum (mass) spectra in high energy collisions
• An energy independent scaling of transverse momentum spectra of direct (prompt) photons from two-body processes in high-energy proton-proton collisions
• Energy dependent chemical potentials of light hadrons and quarks based on transverse momentum spectra and yield ratios of negative to positive particles
• Energy dependent chemical potentials of light particles and quarks from yield ratios of antiparticles to particles in high energy collisions
• Stable Yang-Lee zeros in truncated fugacity series from net-baryon number multiplicity distribution
• Chemical potentials of light hadrons and quarks from yield ratios of negative to positive particles in high energy $pp$ collisions
• Estimation of collision centrality in terms of the number of participating nucleons in heavy-ion collisions using deep learning
• Beam energy dependence of cumulants of the net-baryon, net-charge and deuteron multiplicity distributions in Au+Au collisions at $\sqrt{s_{NN}}=3.0-5.0$ GeV
• Heavy flavor in relativistic heavy-ion collisions
• Kinetic freeze-out temperature and transverse flow velocity in Au-Au collisions at RHIC-BES energies
• Rapidity bin multiplicity correlations from a multi-phase transport model
• Thermodynamic and hydrodynamic characteristics of interacting system formed in relativistic heavy ion collisions
• Effects of Initial Density Fluctuations on Cumulants in Au + Au Collisions at $\sqrt{s_{NN}}$ = 7.7 GeV
• Comment on "Evaluation of kinetic freeze-out properties in different relativistic heavy-ion collision systems at \sqrtsNN = 200 GeV'' (Eur. Phys. J. Plus (2025) 140:179) https://doi.org/10.1140/epjp/s13360-025-06119-0
• Pseudorapidity dependence of short-range correlations from a multi-phase transport model