Overview and Recent Results from BRAHMS

Abstract

The BRAHMS experiment was designed to measure and characterize in particular the properties of rapidity dependence of particle production in heavy ion collisions. The data-taking is now over, results of several years of analysis have been published and demonstrates several important features of the rapidity dependence, not envisioned from the start of the RHIC program. The bulk properties of the system formed at high rapidity resemble that of systems at lower energies at mid-rapidity when referenced via the baryo-chemical potential. New physics in AA are essentially observed at mid-rapidity including the demonstration that high-\pT suppression is a final state effect. Another key result is that in d+A collisions at forward rapidities where the very low-x region of the nucleus was probed, a strong suppression of pion production was observed consistent with the picture of gluon saturation. The latest results examines the centrality and rapidity dependence of nuclear stopping, the particle production of pions, collective expansion vs. rapidity, and the baryon enhancement at intermediate values of \pT .

8 pages, 6 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee Fixed typos and minor text issues as per organizers review request

References in corpus (5)

• Single Transverse Spin Asymmetries of Identified Charged Hadrons in Polarized p+p Collisions at $\sqrt{s}$ = 62.4 GeV
• Fluctuating initial conditions in heavy-ion collisions from the Glauber approach
• Landau Hydrodynamics Reexamined
• Inclusive production of protons, anti-protons and neutrons in p+p collisions at 158 GeV/c beam momentum
• Rapidity-dependent spectra from a single-freeze-out model of relativistic heavy-ion collisions

Cited by in corpus (14)

• THERMINATOR 2: THERMal heavy IoN generATOR 2
• Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Probing initial baryon stopping and equation of state with rapidity-dependent directed flow of identified particles
• A Unified Approach towards Describing Rapidity and Transverse Momentum Distributions in Thermal Freeze-Out Model
• Rapidity scaling of multiplicity and flow in weakly and strongly interacting systems
• Estimation of the freeze-out parameters reachable in the AFTER@LHC project
• The QCD critical point hunt: emergent new ideas and new dynamics
• Elliptic flow at varying energy heavy ion collisions: Partonic vs hadronic dynamics
• Hydrodynamic description of the baryon-charged quark-gluon plasma
• Excitation functions of parameters extracted from three-source (net-)proton rapidity distributions in Au-Au and Pb-Pb collisions over an energy range from AGS to RHIC
• Azimuthal instabilities of the Gribov-Levin-Ryskin equation
• Scaling of flow in heavy ion collisions and the low-energy frontier
• The Equation of State and Multiparticle Production
• Scaling of elliptic flow in heavy ion collisions