A5075724573- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Theoretical and Computational Physics
- High-pressure geophysics and materials
- Physics of Superconductivity and Magnetism
- Quantum, superfluid, helium dynamics
- Fluid Dynamics and Turbulent Flows
- Pulsars and Gravitational Waves Research
- Quantum chaos and dynamical systems
- Dust and Plasma Wave Phenomena
- Quantum Electrodynamics and Casimir Effect
- Geophysics and Gravity Measurements
- Superconducting Materials and Applications
- Numerical methods in inverse problems
- Stochastic processes and statistical mechanics
- Laser-induced spectroscopy and plasma
- Biotin and Related Studies
- Noncommutative and Quantum Gravity Theories
- Mathematics and Applications
- Thermodynamic and Structural Properties of Metals and Alloys
- Quantum optics and atomic interactions
Université Paris-Saclay
2016-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2015-2024
Institut de Physique Théorique
2015-2024
Centre National de la Recherche Scientifique
2015-2024
CEA Paris-Saclay
2015-2024
European Organization for Nuclear Research
1999-2011
The Graduate Center, CUNY
2010
RIKEN BNL Research Center
2010
Baruch College
2010
DSM (Netherlands)
2006-2008
We provide a broad overview of the theoretical status and phenomenological applications Color Glass Condensate effective field theory describing universal properties saturated gluons in hadron wavefunctions that are extracted from deeply inelastic scattering hadron-hadron collision experiments at high energies.
This writeup is a compilation of the predictions for forthcoming Heavy Ion Program at Large Hadron Collider, as presented CERN Theory Institute 'Heavy Collisions LHC - Last Call Predictions', held from May 14th to June 10th 2007.
We propose a gauge-invariant and manifestly UV finite resummation of the physics hard thermal or dense loops (HTL-HDL) in thermodynamics quark-gluon plasma. The starting point is simple, effectively one-loop expression for entropy quark density which derived from fully self-consistent two-loop skeleton approximation to free energy, but subject further approximations, whose quality tested scalar toy model. In contrast with direct HTL-HDL our approach both leading-order (LO) next-to-leading...
Self-consistent approximations in terms of fully dressed propagators provide a simple expression for the entropy an ultrarelativistic plasma, which isolates contribution elementary excitations as leading contribution. Further approximations, whose validity is checked on soluble model involving scalar field, allow us to calculate QCD plasma. We obtain accurate description lattice data purely gluonic QCD, down temperatures about twice transition temperature.
The higher-order perturbative corrections, beyond leading logarithmic accuracy, to the BFKL evolution in QCD at high energy are well known suffer from a severe lack-of-convergence problem, due radiative corrections enhanced by double collinear logarithms. Via an explicit calculation of Feynman graphs light cone (time-ordered) perturbation theory, we show that logarithms (either energy-collinear, or collinear) associated with soft gluon emissions which strictly ordered lifetime. These can be...
We study the average properties of gluon cascade generated by an energetic parton propagating through a quark-gluon plasma. focus on soft, medium-induced emissions which control energy transport at large angles with respect to leading parton. show that effect multiple branchings is important. In contrast what happens in usual QCD vacuum, are quasidemocratic, offspring gluons carrying sizable fractions their parent gluon. This results efficient mechanism for toward medium, akin wave...
In a previous publication, we have established collinearly-improved version of the Balitsky-Kovchegov (BK) equation, which resums to all orders radiative corrections enhanced by large double transverse logarithms. Here, study relevance this equation as tool for phenomenology, confronting it HERA data. To that aim, first improve perturbative accuracy our resummation, including two classes single-logarithmic corrections: those generated non-singular terms in DGLAP splitting functions and...
We study the evolution of an energetic jet which radiates gluons while propagating through a dense QCD medium modeled as random distribution color sources. Motivated by heavy ion experimental program at LHC, we focus on medium-induced radiation (relatively) soft gluons, are abundantly emitted large angles and thus can transport small fraction energy far away from axis. perform complete calculation gluon branching in regime where that take part undergo multiple scattering with medium. extend...
We study the fragmentation of a jet propagating in dense quark-gluon plasma. Using leading, double-logarithmic approximation perturbative QCD, we compute for first time effects medium on multiple vacuumlike emissions. show that, due to scatterings off plasma, in-medium parton showers differ from vacuum ones two crucial aspects: their phase-space is reduced and emission outside can violate angular ordering. function find results qualitative agreement with LHC measurements.
Within the Color Glass Condensate effective theory, we reconsider next-to-leading order (NLO) calculation of single inclusive particle production at forward rapidities in proton-nucleus collisions high energy. Focusing on quark for definiteness, establish a new factorization scheme, perturbatively correct through NLO, which there is no `rapidity subtraction'. That is, NLO correction to impact factor not explicitly separated from high-energy evolution. Our construction exploits skeleton...
A bstract Within perturbative QCD, we develop a new picture for the parton shower generated by jet propagating through dense quark-gluon plasma. This combines in simple, factorised, way multiple medium-induced branchings and standard vacuum-like emissions, with phase-space latter constrained presence of medium. We implement this as Monte Carlo generator that use to study two phenomenologically important observables: nuclear modification factor RAA 𝓏 g distribution reflecting substructure. In...
We demonstrate that hard dijet production via coherent inelastic diffraction is a promising channel for probing gluon saturation at the Electron-Ion Collider. By diffraction, we mean process in which two jets-a quark-antiquark pair generated by decay of virtual photon-are accompanied softer jet, emitted quark or antiquark. This can be described as elastic scattering an effective gluon-gluon dipole. The cross section takes factorized form, between factor and unintegrated ("Pomeron")...
Using the color dipole picture of deep inelastic scattering (DIS) and glass condensate effective theory, we study semi-inclusive jet production in DIS at small <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>x</a:mi></a:mrow></a:math> limit where photon virtuality <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:msup><c:mrow><c:mi>Q</c:mi></c:mrow><c:mrow><c:mn>2</c:mn></c:mrow></c:msup></c:mrow></c:math> is much larger than...
We show that longwavelength excitations of the quark-gluon plasma are described by simple kinetic equations which represent exact motion at leading order in $g$. Properties so-called ``hard thermal loops'', i.e. dominant contributions to amplitudes with soft external lines, find this approach a natural explanation. In particular, their generating functional appears here as effective action describing long wavelength plasma.
We compute analytically the diagonal quark number susceptibilities for a quark-gluon plasma at finite temperature and zero chemical potential, compare with recent lattice results. The calculation uses approximately self-consistent resummation of hard thermal dense loops that we have developed previously. For temperatures between 1.5 to 5 $T_c$, our results follow same trend as data, but exceed them in magnitude by about 5-10%. also lowest order contribution, $\alpha_s^3\log(1/\alpha_s)$,...