Quark and Gluon Degrees of Freedom in High-Energy Heavy Ion Collisions

Abstract

I discuss some recent progress in our understanding of high energy nuclear collisions. I will focus on two topics which I was lucky to co-pioneer in the recent past. One is recombination of quarks and its interpretation as a signal for deconfinement, the second is electromagnetic radiation from jets passing through a quark gluon plasma. This talk was given during the award ceremony for the 2007 IUPAP Young Scientist Award.

arXiv commentInvited Talk at INPC 2007, Tokyo; 8 pages, 6 figures; to appear in Nucl. Phys. A

References in corpus (34)

• 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
• New Forms of QCD Matter Discovered at RHIC
• Hadronization in heavy ion collisions: Recombination and fragmentation of partons
• Disappearance of back-to-back high $p_T$ hadron correlations in central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Parton coalescence and antiproton/pion anomaly at RHIC
• Hadron production in heavy ion collisions: Fragmentation and recombination from a dense parton phase
• Elliptic flow at large transverse momenta from quark coalescence
• Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au+Au collisions at s(NN)**(1/2) = 200-GeV
• Suppressed pi^0 Production at Large Transverse Momentum in Central Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Parton coalescence at RHIC
• Lattice Results on QCD Thermodynamics
• The transition temperature in QCD
• Scaling behavior at high p_T and the p/pi ratio
• Identified baryon and meson distributions at large transverse momenta from Au+Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Anisotropic flow
• High energy photons from passage of jets through quark gluon plasma
• Energy Loss of Leading Hadrons and Direct Photon production in Evolving Quark-Gluon Plasma
• Quark Coalescence based on a Transport Equation
• Scaling Distributions of Quarks, Mesons and Proton for all $p_T$, Energy and Centrality
• Flavor ordering of elliptic flows at high transverse momentum
• Azimuthal Asymmetry of Direct Photons in High Energy Nuclear Collisions
• Large mass dileptons from the passage of jets through quark gluon plasma
• Jet Structure of Baryon Excess in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Correlated Emission of Hadrons from Recombination of Correlated Partons
• Measurement of identified pi^0 and inclusive photon v_2 and implication to the direct photon production in sqrt(s_NN) = 200 GeV Au+Au collisions
• Recombination Models
• Centrality Dependence of Direct Photons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• High Momentum Dilepton Production from Jets in a Quark Gluon Plasma
• Hadronization in heavy ion collisions: recombination or fragmentation?
• Jet Correlations of Identified Particles in PHENIX
• The electromagnetic signature of jets
• Correlations in the Parton Recombination Model