801 citations · 4.1k across the 36 of their papers we have counts for
25 papers · 1 filter
Light-by-Light Scattering in the Presence of Magnetic Fields
R. Baier, A. Rebhan, M. Wödlinger
The low-energy light-by-light cross section as determined by the nonlinear Euler-Heisenberg QED Lagrangian is evaluated in the presence of constant magnetic fields in the center-of…
Predictions for Pb Collisions at sqrt s_NN = 5 TeV
J. L. Albacete, N. Armesto, R. Baier +38
Predictions for charged hadron, identified light hadron, quarkonium, photon, jet and gauge bosons in p+Pb collisions at sqrt s_NN = 5 TeV are compiled and compared. When test run d…
Production of Prompt Photons: Holographic Duality and Thermalization
Rudolf Baier, Stefan A. Stricker, Olli Taanila +1
We study the production of prompt photons in strongly coupled out-of-equilibrium Super Yang-Mills plasma using the AdS/CFT correspondence. Our goal is to determine the photon emiss…
Holographic dilepton production in a thermalizing plasma
Rudolf Baier, Stefan A. Stricker, Olli Taanila +1
We determine the out-of-equilibrium production rate of dileptons at rest in strongly coupled N=4 Super Yang-Mills plasma using the AdS/CFT correspondence. Thermalization is achieve…
Proceedings of the 38th International Symposium on Multiparticle Dynamics (ISMD08)
J. Bartels, K. Borras, G. Gustafson +113
Proceedings of ISMD08
Has saturation physics been observed in deuteron-gold collisions at RHIC?
Yacine Mehtar-Tani
We have addressed the question of whether saturation (CGC) has been observed in deuteron-gold collisions at RHIC. We have made a detailed analysis of the Cronin peak characteristic…
Dissipative Hydrodynamics and Heavy Ion Collisions
Rudolf Baier, Paul Romatschke, Urs Achim Wiedemann
Recent discussions of RHIC data emphasized the exciting possibility that the matter produced in nucleus-nucleus collisions shows properties of a near-perfect fluid. Here, we aim at…
Has saturation physics been observed in deuteron-gold collisions at RHIC?
Rudolf Baier, Yacine Mehtar-Tani, Dominique Schiff
In the framework of the recently proposed saturation picture, we examine in a systematic way whether the nuclear modification factor measured for d-Au collisions at RHIC may be sim…
Particle Correlations in Saturated QCD Matter
Rudolf Baier, Alex Kovner, Marzia Nardi +1
We study quantitatively angular correlations in the two-particle spectrum produced by an energetic probe scattering off a dense hadronic target with sizeable saturation momentum. T…
Kinetic equations for Bose-Einstein condensates from the 2PI effective action
R. Baier, T. Stockamp
We use the 2PI effective action of a relativistic scalar field theory to derive kinetic equations for a Bose-condensed system near the phase transition.We start from equations of m…
Saturation and parton level Cronin effect: enhancement vs suppression of gluon production in p-A and A-A collisions
Rudolf Baier, Alexander Kovner, Urs Achim Wiedemann
We note that the phenomenon of perturbative saturation leads to transverse momentum broadening in the spectrum of partons produced in hadronic collisions. This broadening has a sim…
Jet Quenching
R. Baier
A short summary of the physics underlying jet quenching is given
Far-from-equilibrium dynamics with broken symmetries from the 2PI-1/N expansion
G. Aarts, D. Ahrensmeier, R. Baier +2
We derive the nonequilibrium real-time evolution of an O(N) - invariant scalar quantum field theory in the presence of a nonvanishing expectation value of the quantum field. Using…
Quenching of hadron spectra in media
R. Baier, Yu. L. Dokshitzer, A. H. Mueller +1
We determine how the yield of large transverse momentum hadrons is modified due to induced gluon radiation off a hard parton traversing a QCD medium. The quenching factor is formal…
Parametric amplification versus collisions: An illustrative application
D. Ahrensmeier, R. Baier, M. Dirks
We investigate the time dependence of the quantum statistical model with self-interaction and consider the resulting induced particle number density. For a special exampl…
On the Angular Dependence of the Radiative Gluon Spectrum
R. Baier, Yu. L. Dokshitzer, A. H. Mueller +1
The induced momentum spectrum of soft gluons radiated from a high energy quark produced in and propagating through a QCD medium is reexamined in the BDMPS formalism. A mistake in o…
Bottom-up thermalization in heavy ion collisions
R. Baier, A. H. Mueller, D. Schiff +1
We describe how thermalization occurs in heavy ion collisions in the framework of perturbative QCD. When the saturation scale is large compared to , thermalization t…
Energy loss in perturbative QCD
R. Baier, D. Schiff, B. G. Zakharov
We review the properties of energetic parton propagation in hot or cold QCD matter, as obtained in recent works. Advances in understanding the energy loss - collisional and radiati…
Dynamical screening in hot systems away from (chemical) equilibrium
R. Baier, M. Dirks, K. Redlich
Within the Closed Time Path Formalism of Thermal Field Theory we calculate the hard photon emission rate as well as the collisional energy-loss rate for a quark-gluon plasma away f…
Angular Dependence of the Radiative Gluon Spectrum and the Energy Loss of Hard Jets in QCD Media
R. Baier, Yu. L. Dokshitzer, A. H. Mueller +1
The induced momentum spectrum of soft gluons radiated from a high energy quark propagating through a QCD medium is derived in the BDMPS formalism. A calorimetric measurement for th…
Dynamical screening away from equilibrium: hard photon production and collisional energy loss
R. Baier, M. Dirks, K. Redlich
We investigate the production rate for hard real photons and the collisional energy loss in the quark-gluon plasma away from chemical equilibrium. Applying the Hard-Thermal-Loop re…
Medium-induced radiative energy loss; equivalence between the BDMPS and Zakharov formalisms
R. Baier, Yu. L. Dokshitzer, A. H. Mueller +1
We extend the BDMPS formalism for calculating radiative energy loss to the case when the radiated gluon carries a finite fraction of the quark momentum. Some virtual terms, previou…
Anomalous electromagnetic processes at high temperatures
R. Baier, M. Dirks, O. Kober
Chiral theories of constituent quarks interacting with bosons and photons at high temperatures are studied. In the expected chirally symmetric phase effective electromagnetic anoma…
Anomalous Processes in Effective Chiral Theories at High Temperatures
R. Baier, M. Dirks, O. Kober
We discuss chiral theories of constituent quarks interacting with bosons at high temperatures. In the chirally symmetric phase we demonstrate by applying functional methods the pre…