MARTINI - Monte Carlo simulation of jet evolution (2009)
Schenke, Bjoern, Gale, Charles, Jeon, Sangyong
We present the Modular Algorithm for Relativistic Treatment of heavy IoN Interactions (MARTINI), an event generator for the hard and penetrating probes in high energy nucleus-nucleus collisions. The...
MARTINI: An event generator for relativistic heavy-ion collisions (2009)
Schenke, Bjoern, Gale, Charles, Jeon, Sangyong
We introduce the Modular Algorithm for Relativistic Treatment of heavy IoN Interactions (MARTINI), a comprehensive event generator for the hard and penetrating probes in high energy nucleus-nucleus...
Jet Quenching in Evolving QGP Medium (2009)
A short summary of different approaches to the parton energy loss problem is given. A particular attention is paid to the differences between various models. A possible solution to the problem of...
A Reanalysis of Single Photon Data at CERN SPS (2009)
Gale, Charles, Chatterjee, Rupa, Srivastava, Dinesh K., Jeon, Sangyong
We reanalyze the WA98 single photon data at CERN SPS by incorporating several recent developments in the study of prompt and thermal photon production from relativistic heavy ion collisions. Isospin...
Jet energy loss, photon production, and photon-hadron correlations at RHIC (2009)
Qin, Guang-You, Ruppert, Jorg, Gale, Charles, Jeon, Sangyong, Moore, Guy D.
Jet energy loss, photon production and photon-hadron correlations are studied together at high transverse momentum in relativistic heavy-ion collisions at RHIC energies. The modification of hard jets...
The Double Life of Thermal QCD (2009)
Mia, Mohammed, Dasgupta, Keshav, Gale, Charles, Jeon, Sangyong
We study the gravity dual of a thermal gauge theory whose behavior parallels that of thermal QCD in the far IR. The UV of our theory has infinite degrees of freedom. We holographically renormalize...
Five Easy Pieces: The Dynamics of Quarks in Strongly Coupled Plasmas (2009)
Mia, Mohammed, Dasgupta, Keshav, Gale, Charles, Jeon, Sangyong
We revisit the analysis of the drag a massive quark experiences and the wake it creates at a temperature T while moving through a plasma using a gravity dual that captures the renormalisation group...
Single photons from relativistic collision of lead nuclei at CERN SPS: A reanalysis (2009)
Chatterjee, Rupa, Srivastava, Dinesh K., Jeon, Sangyong
We present a reanalysis of single photon production from relativistic collision of lead nuclei at CERN SPS measured by the WA98 experiment. The refinements include use of iso-spin and shadowing...
Fillion-Gourdeau, Francois, Jeon, Sangyong
We compute the inclusive differential cross section production of the pseudo-scalar meson eta' in high-energy proton-proton (pp) and proton-nucleus (pA) collisions. We use an effective coupling...
Hot Neutron Stars as a Source for Gamma Ray Bursts at Cosmological Distance Scales (2007)
Distance Scales, Henning Heiselberg, Sangyong Jeon, Larry Mclerran, Hua-bin Tang
We discuss the possibility that the sources for gamma ray bursts are hot neutron stars at cosmological distance scales. The temperature of such stars would be T ΒΈ 1 MeV. Such hot stars can produce...
Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at RHIC (2007)
Qin, Guang-You, Ruppert, Jorg, Gale, Charles, Jeon, Sangyong, Moore, Guy D., Mustafa, Munshi G.
We calculate and compare bremsstrahlung and collisional energy loss of hard partons traversing a quark-gluon plasma. Our treatment of both processes is complete at leading order in the coupling and...
Tensor Meson Production in Proton-Proton Collisions from the Color Glass Condensate (2007)
Fillion-Gourdeau, Francois, Jeon, Sangyong
We compute the inclusive cross-section of $f_{2}$ tensor mesons production in proton-proton collisions at high-energy. We use an effective theory inspired from the tensor meson dominance hypothesis...
Shear viscosity in weakly coupled ${\cal N} {=} 4$ Super Yang-Mills theory compared to QCD (2006)
Huot, Simon C., Jeon, Sangyong, Moore, Guy D.
We compute the shear viscosity of weakly coupled N=4 supersymmetric Yang-Mills (SYM) theory. Our result for [eta/s], the viscosity to entropy-density ratio, is many times smaller than the...
Fluctuations in jet momentum as an energy loss probe (2006)
Torrieri, Giorgio, Gale, Charles, Jeon, Sangyong, Pop, Vasile Topor
We investigate the measurement of the distribution of away-side jet $p_T$ as a way to probe the energy loss mechanism in heavy ion collisions, and constrain the properties of the medium created in...
Charge Transfer Fluctuations as a QGP Signal (2005)
In this study, we analyze the recently proposed charge transfer fluctuations within a finite pseudo-rapidity space. As the charge transfer fluctuation is a measure of the local charge correlation...
Particle multiplicities and fluctuations in 200 GeV Au-Au collisions (2005)
Torrieri, Giorgio, Jeon, Sangyong, Rafelski, Johann
We use the statistical hadronization model (SHM) to describe hadron multiplicity yields and fluctuations. We consider 200 GeV Au-Au collisions, and show that both event averaged yields of stable...
Constraining freeze-out with yields and fluctuations (2005)
Torrieri, Giorgio, Jeon, Sangyong, Rafelski, Johann
We show that the simultaneous measurement of yields and fluctuations in heavy ion collisions is capable of falsifying and constraining the statistical hadronization model. We show how such a...
A statistical model analysis of yields and fluctuations in 200 GeV Au-Au collisions (2005)
Torrieri, Giorgio, Jeon, Sangyong, Rafelski, Johann
We show that the simultaneous measurement of yields and fluctuations is capable of falsifying and constraining the statistical hadronization model. We show how such a measurement can test for...
Detecting QGP with Charge Transfer Fluctuations (2005)
Jeon, Sangyong, Shi, Lijun, Bleicher, Marcus
In this study, we analyze the recently proposed charge transfer fluctuations within a finite pseudo-rapidity space. As the charge transfer fluctuation is a measure of the local charge correlation...
A classical Odderon in QCD at high energies (2005)
Jeon, Sangyong, Venugopalan, Raju
We show that the weight functional for color sources in the classical theory of the Color Glass Condensate includes a term which generates Odderon excitations. Remarkably, the classical origin of...
Particle yield fluctuations and chemical non-equilibrium at RHIC (2005)
Torrieri, Giorgio, Jeon, Sangyong, Rafelski, Johann
We study charge fluctuations within the statistical hadronization model. Considering both the particle yield ratios and the charge fluctuations we show that it is possible to differentiate between...
Charge Transfer Fluctuations as a Signal for QGP (2005)
In this work, the charge transfer fluctuation which was previously used for $pp$ collisions is proposed for relativistic heavy-ion collisions as a QGP probe. We propose the appearance of a local...
Energy Loss of Leading Hadrons and Direct Photon production in Evolving Quark-Gluon Plasma (2005)
Turbide, Simon, Gale, Charles, Jeon, Sangyong, Moore, Guy D.
We calculate the nuclear modification factor of neutral pions and the photon yield at high p_T in central Au-Au collisions at RHIC (\sqrt{s}=200 GeV) and Pb-Pb collisions at the LHC (\sqrt{s}=5500...
The Boltzmann Equation in Classical and Quantum Field Theory (2004)
Improving upon the previous treatment by Mueller and Son, we derive the Boltzmann equation that results from a classical scalar field theory. This is obtained by starting from the corresponding...
Jeon, Sangyong, Venugopalan, Raju
The effective action for wee partons in large nuclei includes a sum over static color sources distributed in a wide range of representations of the SU(N_c) color group. The problem can be formulated...
The phantom menaced: constraints on low-energy effective ghosts (2003)
Cline, James M., Jeon, Sangyong, Moore, Guy D.
It has been suggested that a scalar field with negative kinetic energy, or ``ghost,'' could be the source of the observed late-time cosmological acceleration. Naively, such theories should be ruled...
Energy Loss of Leading Partons in a Thermal QCD Medium (2003)
We consider bremsstrahlung energy loss for hard partons traversing a quark-gluon plasma. Accounting correctly for the probabilistic nature of the energy loss, and making a leading-order accurate...
Universal Transition Curve in Pseudo-Rapidity Distribution (2003)
Jeon, Sangyong, Pop, Vasile Topor, Bleicher, Marcus
We show that an unambiguous way of determining the universal limiting fragmentation region is to consider the derivative ($d^2n/d\eta^2$) of the pseudo-rapidity distribution per participant pair. In...
Event-by-Event Fluctuations (2003)
In this review, we systematically examine the principles and the practices of fluctuations such as the momentum and the charge fluctuations as applied to the heavy ion collisions. Main emphases are:...
Polarized Gluon Distribution Function from $\eta'$ Production (2002)
Jeon, Sangyong, Jalilian-Marian, Jamal
Using the recently proposed $gg\eta'$ effective vertex, we investigate the production of $\eta'$ from gluon fusion in polarized pp collisions. We show that by measuring $A_{LL}$ in $\eta'$...
Probing Gluons in Nuclei: the Case of $\eta'$ (2001)
Jalilian-Marian, Jamal, Jeon, Sangyong
Using the recently proposed $gg --> eta'$ effective vertex, we investigate the production of $\eta'$ from gluon fusion in $pA$ collisions. We show that measuring $\eta'$ production cross-section at...
Balance Functions, Correlations, Charge Fluctuations and Interferometry (2001)
Connections between charge balance functions, charge fluctuations and correlations are presented. It is shown that charge fluctuations can be directly expressed in terms of a balance functions under...
Production of $\eta'$ from Thermal Gluon Fusion (2001)
We study the production of $\eta'$ from hadronizing thermal gluons using recently proposed $\eta'-g-g$ effective vertex. The $\eta'$ yield is found to be sensitive to the initial condition. At RHIC...
Jeon, Sangyong, Kapusta, Joseph
We compare three semi-microscopic theories to the first data on particle production in central Au+Au collisions taken at RHIC by the PHOBOS collaboration as well as to existing data on central Pb+Pb...
Wong's equations and the small x effective action in QCD (2000)
Jalilian-Marian, Jamal, Jeon, Sangyong, Venugopalan, Raju
We propose a new form for the small x effective action in QCD. This form of the effective action is motivated by Wong's equations for classical, colored particles in non-Abelian background fields. We...
Gale, Charles, Jeon, Sangyong, Kapusta, Joseph
Using a coherence time extracted from high precision proton-nucleus Drell-Yan measurements and a nuclear absorption cross section extracted from pA charmonium production experiments, we study J/psi...
Jalilian-Marian, Jamal, Jeon, Sangyong, Venugopalan, Raju, Wirstam, Jens
The one loop effective action in quantum field theory can be expressed as a quantum mechanical path integral over world lines, with internal symmetries represented by Grassmanian variables. In this...
Drell-Yan and J/psi Production in High Energy Proton-Nucleus and Nucleus-Nucleus Collisions (1999)
Gale, Charles, Jeon, Sangyong, Kapusta, Joseph
The distributions of outgoing protons and charged hadrons in high energy proton-nucleus collisions are described rather well by a linear extrapolation from proton-proton collisions. This linear...
Dynamical Evolution of the Scalar Condensate in Heavy Ion Collisions (1999)
Csernai, Laszlo P., Ellis, Paul J., Jeon, Sangyong, Kapusta, Joseph I.
We derive the effective coarse-grained field equation for the scalar condensate of the linear sigma model in a simple and straightforward manner using linear response theory. The dissipative...
Ayala, Alejandro, Jeon, Sangyong, Kapusta, Joseph
We compute the Coulomb distortion produced by an expanding and highly charged fireball on the spectra of low transverse momenta and mid rapidity pions produced in central high energy heavy ion...
Gale, Charles, Jeon, Sangyong, Kapusta, Joseph
We show that the distributions of outgoing protons and charged hadrons in high energy proton-nucleus collisions are described rather well by a linear extrapolation from proton-proton collisions. The...
J/psi Production and Absorption in High Energy Proton-Nucleus Collisions (1998)
Gale, Charles, Jeon, Sangyong, Kapusta, Joseph
Measured J/Psi production cross sections for 200 and 450 GeV/c protons incident on a variety of nuclear targets are analyzed within a Glauber framework which takes into account energy loss of the...
Ayala, Alejandro, Jeon, Sangyong, Kapusta, Joseph
We compute the Coulomb effects produced by an expanding, highly charged fireball on the momentum distribution of pions. We compare our results to data on Au+Au at 11.6 A GeV from E866 at the BNL AGS...
Nucleus-Nucleus Bremsstrahlung from Ultrarelativistic Collisions (1998)
Jeon, Sangyong, Kapusta, Joseph, Chikanian, Alexei, Sandweiss, Jack
The bremsstrahlung produced when heavy nuclei collide is estimated for central collisions at the Relativistic Heavy Ion Collider. Soft photons can be used to infer the rapidity distribution of the...
Multiple Scattering Expansion of the Self-Energy at Finite Temperature (1998)
Jeon, Sangyong, Ellis, Paul J.
An often used rule that the thermal correction to the self-energy is the thermal phase-space times the forward scattering amplitude from target particles is shown to be the leading term in an exact...
Hot Neutron Stars as a Source for Gamma Ray Bursts at Cosmological Distance Scales (1997)
Heiselberg, Henning, Jeon, Sangyong, McLerran, Larry, Tang, Hua-Bin
We discuss the possibility that the sources for gamma ray bursts are hot neutron stars at cosmological distance scales. The temperature of such stars would be $T \sim 1 \MeV$. Such hot stars can...
Jeon, Sangyong, Kapusta, Joseph
We use a Glauber-like approach to describe very energetic nucleus-nucleus collisions as a sequence of binary nucleon-nucleon collisions. No free parameters are needed: all the information comes from...
Pion Decay Constant at Finite Temperature in the Nonlinear Sigma Model (1996)
Jeon, Sangyong, Kapusta, Joseph
We calculate the pion decay constant near the critical temperature of the $O(N)$ nonlinear sigma model in the large $N$ limit. Making use of the known low temperature behavior, we construct a...
Jeon, Sangyong, Yaffe, Laurence G.
The evaluation of hydrodynamic transport coefficients in relativistic field theory, and the emergence of an effective kinetic theory description, is examined. Even in a weakly-coupled scalar field...
Hydrodynamic Transport Coefficients in Relativistic Scalar Field Theory (1994)
Hydrodynamic transport coefficients may be evaluated from first principles in a weakly coupled scalar field theory at arbitrary temperature. In a theory with cubic and quartic interactions, the...
Hydrodynamic transport coefficients in relativistic scalar field theory / (1994)
Thesis (Ph. D.)--University of Washington, 1994.
Computing Spectral Densities in Finite Temperature Field Theory (1992)
Convenient Cutkosky-like diagrammatic rules for computing the spectral densities of arbitrary two-point correlation functions in finite temperature field theory are derived. The approach is based on...