Bulletin of the American Physical Society
2010 Fall Meeting of the APS Division of Nuclear Physics
Volume 55, Number 14
Tuesday–Saturday, November 2–6, 2010; Santa Fe, New Mexico
Session 2WC: QCD and the Quark Gluon Plasma II |
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Chair: Melynda Brooks, Los Alamos National Laboratory Room: Sweeny C |
Wednesday, November 3, 2010 9:00AM - 9:30AM |
2WC.00001: RHIC energy scan and the search for the critical point Invited Speaker: The QCD phase diagram of nuclear matter can be mapped onto the 2 dimensional space of temperature and baryon chemical potential. One of the key landmarks in this space is the Critical Point, which indicates the end point of an ordered phase transition from a hadron gas to a Quark Gluon Plasma (QGP) to that of a smooth transition or crossover. However, the exact location of the critical point, cannot yet be reliably calculated and must be sought for experimentally. Collisions of different beam energies result in different temperature and baryon chemical potential entry points providing us with the tools to probe a wide range of the phase diagram. A beam energy scan program has been initiated this year at RHIC to search for evidence of a critical point in QCD. Data was collected in Run-10 from Au-Au collisions at center of mass energies of 62.4, 39, 11.5, and 7.7 GeV per nucleon. The 7.7 GeV are the lowest ever collided at RHIC. The talk will briefly discuss and accelerator performances, but will mainly focus on the the results from this effort and future prospects. [Preview Abstract] |
Wednesday, November 3, 2010 9:30AM - 10:00AM |
2WC.00002: Lattice, potential models, and analytical computations of quarkonia Invited Speaker: |
Wednesday, November 3, 2010 10:00AM - 10:30AM |
2WC.00003: Recent experimental results on di-lepton and quarkonium production in heavy ion reactions Invited Speaker: Over the last ten years the experiments at RHIC have continued to increase the amount of recorded and analyzed data available for p+p, d+Au and A+A colliding species at various energies. These data have allowed us to analyze quarkonia and di-lepton production for all three collision types which contributes to the understanding of quarkonia formation, suppression in cold nuclear matter and anomalous suppression in heavy ion collisions. This talk will discuss the most recent quarkonia measurements available from both the STAR and PHENIX collaboration in heavy ion collisions. I will attempt to summarize the state of the field in terms of extracting non-QGP related effects that complicate the interpretation of heavy ion data for quarkonia. [Preview Abstract] |
Wednesday, November 3, 2010 10:30AM - 11:00AM |
2WC.00004: COFFEE BREAK
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Wednesday, November 3, 2010 11:00AM - 11:30AM |
2WC.00005: Theoretical advances in understanding jet and open heavy flavor production Invited Speaker: High transverse momentum (pT) and heavy particles have long been considered powerful probes of the hot and dense QCD matter produced in heavy-ion collisions. With the upcoming RHIC upgrade and start of the LHC heavy-ion program, it is crucial that the theoretical understanding of these probes be on a solid foundation. Recent advances in the theory of jet physics in heavy-ion collisions, such as the development of Monte Carlo simulation of jet quenching, the theory of medium response to jets, jets tagged with electromagnetic probes, and the theory of jet shapes and jet cross sections, have paved the way for a more complete understanding of the interplay between high pT probes and hot and dense QCD matter. Additionally, there have been several recent advances in the theory of open heavy flavor production, such as heavy flavor diffusion and the dissociation of open heavy flavor mesons. In this talk, I will present a report on the theoretical status of jet and open heavy flavor production, with a focus on recent theoretical advances and open questions. [Preview Abstract] |
Wednesday, November 3, 2010 11:30AM - 12:00PM |
2WC.00006: Experimental Perspectives on Hard Probes in Heavy Ion Collisions Invited Speaker: Hard probes have been extensively used to probe the hot partonic matter created in heavy ion collisions at RHIC. Measurements of single particles, two particle correlations and jets each provide complementary insights into the interaction of fast partons with the produced matter. Luminosity increases at RHIC have enabled advances in the discriminating power of the measurements through increased statistical precision, the use of identified particles (such as pions, photons, and electrons from heavy flavor decay), and the reaction plane dependence of results. New detector upgrades to STAR and PHENIX for heavy flavor measurements and advances in jet reconstruction techniques both promise new insights. We will discuss what the existing data tell us and the directions of future inquiry. [Preview Abstract] |
Wednesday, November 3, 2010 12:00PM - 12:30PM |
2WC.00007: LHC and Future Directions in Heavy Ion Physics Invited Speaker: The Large Hadron Collider will soon provide heavy ion collisions at the highest energy density produced in a laboratory. These TeV scale Pb+Pb collisions are expected to allow further studies into the understanding of the quark-gluon plasma. Particles will be produced out to a higher $p_T$ range than in previous Heavy Ion collisions, allowing for studies of the nuclear modification factor ($R_{AA}$) and direct measurements of jets and photons. Soft probes such as charged particle multiplicity, low $p_T$ hadron spectra, and elliptic flow can give information on the collective, or bulk properties of the system. The detectors at the LHC are well designed to take advantage of this new energy range. [Preview Abstract] |
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