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Summary (Summary Talk at the Quarkonium Production in Nuclear Collisions Workshop).

Description: This summary is an attempt to overview the wealth of new results and ideas in quarkonium physics presented at the Seattle Workshop. The Workshop in Seattle has shown that the physics of heavy quarkonium continues to develop at a fast pace; moreover, we have every reason to believe that the next year, with RHIC turning on, will mark the beginning of the new exciting era in this field.
Date: May 11, 1998
Creator: Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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QUARKONIUM PRODUCTION IN RELATIVISTIC NUCLEAR COLLISIONS. PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP, VOLUME 12

Description: The RIKEN-BNL Workshop on Quarkonium Production in Relativistic Nuclear Collisions was held September 28--October 2, 1998, at Brookhaven National Laboratory. The Workshop brought together about 50 invited participants from around the world and a number of Brookhaven physicists from both particle and nuclear physics communities.
Date: April 20, 1999
Creator: Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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THEORETICAL ISSUES IN J/PSI SUPPRESSION.

Description: Two decades ago Matsui and Satz suggested that Debye screening in the quark-gluon plasma would result in J/{psi} suppression in heavy ion collisions. Much has happened in the subsequent years, and the picture of quark-gluon plasma at present is rapidly evolving - what does it imply for the J/{psi} suppression? What are the recent RHIC and SPS results trying to tell us? What else has to be done? This talk is an attempt to address these questions.
Date: November 14, 2006
Creator: Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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RELATIVISTIC HEAVY ION PHYSICS: A THEORETICAL OVERVIEW.

Description: This is a mini-review of recent theoretical work in the field of relativistic heavy ion physics. The following topics are discussed initial conditions and the Color Glass Condensate; approach to thermalization and the hydrodynamic evolution; hard probes and the properties of the Quark-Gluon Plasma. Some of the unsolved problems and potentially promising directions for future research are listed as well.
Date: March 28, 2004
Creator: Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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Axial Anomaly, Dirac Sea, and the Chiral Magnetic Effect

Description: Gribov viewed the axial anomaly as a manifestation of the collective motion of Dirac fermions with arbitrarily high momenta in the vacuum. In the presence of an external magnetic field and a chirality imbalance, this collective motion becomes directly observable in the form of the electric current - this is the chiral magnetic effect (CME). I give an elementary introduction into the physics of CME, and discuss the experimental status and recent developments.
Date: May 26, 2010
Creator: Kharzeev, D.E.
Partner: UNT Libraries Government Documents Department
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WHAT ARE WE LEARNING FROM RHIC?

Description: Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory on Long Island, New York, began operation in 2000 culminating over ten years of development and construction, and a much longer period of theoretical speculations about the properties of hot QCD matter produced in nuclear collisions in the collider regime. RHIC's 2.4mile rings contain superconducting magnets, which operate at minus 451.6 degrees Fahrenheit, 4.5 degrees above the absolute zero. RHIC collides two intersectin… more
Date: June 24, 2002
Creator: Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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THE INTERACTIONS OF HEAVY QUARKONIUM: SOME RECENT RESULTS

Description: Some recent developments in the theory of heavy quarkonium interactions are presented. First, the authors consider quarkonium-quarkonium scattering at very low energies--an analog of the Van der Waals interaction. These long-range forces have very surprising properties in QCD--in particular, as a consequence of scale anomaly, the strength of the interaction at large distances appears independent of the coupling constant and is entirely determined by the non-perurbative vacuum energy density. Se… more
Date: January 17, 2000
Creator: Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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J/{Psi} suppression as an evidence for quark gluon matter

Description: The J/{psi} suppression was originally proposed as a signature of the quark-gluon plasma. Strong suppression of J/{psi} production was indeed observed recently by the NA50 Collaboration at CERN SPS. Is it the first signature of a long-awaited quark-gluon matter, or just a peculiar combination of ''conventional'' effects acting together to produce the puzzling pattern observed experimentally? In this lecture, I am trying to summarize the existing theoretical explanations.
Date: August 10, 1998
Creator: Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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HADRON MULTIPLICITIES AT THE LHC .

Description: We present the predictions for hadron multiplicities in pp, pA and AA collisions at the LHC based on our approach to the Color Glass Condensate.
Date: May 14, 2007
Creator: Kharzeev, D.; Levin, E. & Nardi, M.
Partner: UNT Libraries Government Documents Department
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PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP (VOL. 71)

Description: The high energy limit of Quantum Chromodynamics is one of the most fascinating areas in the theory of strong interactions. Over a decade ago the HERA experiment at DESY in Hamburg provided strong evidence for the rise of the proton structure function at small values of the Bjorken variable x. This behavior can be explained as an increase of the gluon density of the proton with energy or correspondingly with smaller values of x. This increase can be attributed on the other hand to the large prob… more
Date: March 7, 2005
Creator: KHARZEEV, D.; STASTO, A.; TUCHIN, K. & VOGELSANG, W.
Partner: UNT Libraries Government Documents Department
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Proceedings of RIKEN BNL Research Center Workshop on Baryon Dynamics at RHIC, March 28-30, 2002, Brookhaven National Laboratory.

Description: One of the striking observations at RHIC is the large valence baryon rapidity density observed at mid rapidity in central Au+Au at 130 A GeV. There are about twice as many valence protons at mid-rapidity than predicted based on extrapolation from p+p collisions. Even more striking PHENIX observed that the high pt spectrum is dominated by baryons and anti-baryons. The STAR measured event anisotropy parameter v2 for lambdas are as high as charged particles at pt {approx} 2.5 GeV/c. These are comp… more
Date: March 28, 2002
Creator: Gyulassy, M.; Kharzeev, D. & Xu, N.
Partner: UNT Libraries Government Documents Department
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Long-Range Interactions of Small Color Dipoles.

Description: We study the scattering of small color dipoles (e.g., heavy quarkonium states) at low energies. We find that even though the couplings of color dipoles to the gluon field can be described in perturbation theory, at large distances the interaction becomes totally non-perturbative. The structure of the scattering amplitude, however, is fixed by the (broken) chiral and scale symmetries of QCD; the leading long-distance contribution arises from the correlated two-pion exchange. We use the spectral … more
Date: April 16, 1998
Creator: Fujii, H. & Kharzeev, D.
Partner: UNT Libraries Government Documents Department
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Proceedings of RIKEN BNL Research Center Workshop entitled Hydrodynamics in Heavy Ion Collisions and QCD Equation of State (Volume 88)

Description: The interpretation of relativistic heavy-ion collisions at RHIC energies with thermal concepts is largely based on the relative success of ideal (nondissipative) hydrodynamics. This approach can describe basic observables at RHIC, such as particle spectra and momentum anisotropies, fairly well. On the other hand, recent theoretical efforts indicate that dissipation can play a significant role. Ideally viscous hydrodynamic simulations would extract, if not only the equation of state, but also tr… more
Date: April 21, 2008
Creator: Karsch, F.; Kharzeev, D.; Molnar, K.; Petreczky, P. & Teaney, D.
Partner: UNT Libraries Government Documents Department
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Proceedings of RIKEN BNL Research Center Workshop: P- and CP-odd Effects in Hot and Dense Matter

Description: This volume contains the proceedings of the RBRC/CATHIE workshop on 'P- and CP-odd Effects in Hot and Dense Matter' held at the RIKEN-BNL Research Center on April 26-30, 2010. The workshop was triggered by the experimental observation of charge correlations in heavy ion collisions at RHIC, which were predicted to occur due to local parity violation (P- and CP-odd fluctuations) in hot and dense QCD matter. This experimental result excited a significant interest in the broad physics community, in… more
Date: April 26, 2010
Creator: Deshpande, A.; Fukushima, K.; Kharzeev, D.; Warringa, H. & Voloshin, S.
Partner: UNT Libraries Government Documents Department
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SCALING PROPERTIES OF THE TRANSVERSE MASS SPECTRA.

Description: Motivated from the formation of an initial state of gluon-saturated matter, we discuss scaling relations for the transverse mass spectra at BNL's Relativistic Heavy-Ion Collider (RHIC). We show on linear plots, that the transverse mass spectra for various hadrons can be described by an universal function in m{sub t}. The transverse mass spectra for different centralities can be rescaled into each other. Finally, we demonstrate that m{sub t}-scaling is also present in proton-antiproton collider … more
Date: January 13, 2002
Creator: Schaffner-Bielich, J.; Kharzeev, D.; Mclerran, L. & Venugopalan, R.
Partner: UNT Libraries Government Documents Department
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Proceedings of Riken Bnl Research Center Workshop (Volume 64)

Description: We are presently in a very exciting and important phase of the RHIC era. A huge body of data. has been gathered in heavy-ion collisions that provides very convincing evidence for the formation of a quark. gluon plasma in central collisions. Recently, studies of nuclear modification factors in forward dAu collisions have shown tantalizing signatures that may be understood most naturally in terms of a, universal form of matter controlling the high energy limit of strong interactions, the Color Gl… more
Date: September 28, 2004
Creator: Kharzeev, D.; Kretzer, S.; Teaney, D.; Venugopalan, R. & Vogelsang, W.
Partner: UNT Libraries Government Documents Department
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Parity Odd Bubbles in Hot QCD.

Description: We consider the topological susceptibility for an SU(N) gauge theory in the limit of a large number of colors, N {r_arrow} {infinity}. At nonzero temperature, the behavior of the topological susceptibility depends upon the order of the deconfining phase transition. The most interesting possibility is if the deconfining transition, at T = T{sub d}, is of second order. Then we argue that Witten's relation implies that the topological susceptibility vanishes in a calculable fashion at Td. As noted… more
Date: April 16, 1998
Creator: Kharzeev, D.; Pisarski, R. D. & Tytgat, M. H. G.
Partner: UNT Libraries Government Documents Department
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Topologically induced local P and CP violation in hot QCD

Description: Very stringent experimental bounds exist on the amount of P and CP violation in strong interactions. Nevertheless, the presence of non-Abelian topological solutions and the axial anomaly make the issue of CP invariance in QCD non-trivial ('the strong CP problem'). Even in the absence of a global P and CP violation the fluctuations of topological charge in the QCD vacuum are expected to play an important role in the breaking of chiral symmetry, and in the mass spectrum and other properties of ha… more
Date: February 1, 2009
Creator: Kharzeev,D.E.
Partner: UNT Libraries Government Documents Department
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HIGH ENERGY NUCLEAR INTERACTIONS AND QCD : AN INTRODUCTION.

Description: The goal of these lectures, oriented towards the students just entering the field, is to provide an elementary introduction to QCD and the physics of nuclear interactions at high energies. We first introduce the general structure of QCD and discuss its main properties. Then we proceed to Glauber multiple scattering theory which lays the foundation for the theoretical treatment of nuclear interactions at high energies. We introduce the concept of Gribov's inelastic shadowing, crucial for the und… more
Date: January 7, 2002
Creator: KHARZEEV,D.E. & RAUFEISEN,J.
Partner: UNT Libraries Government Documents Department
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