A5063445841- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Mechanical Engineering and Vibrations Research
- Robotic Mechanisms and Dynamics
- Control and Stability of Dynamical Systems
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum, superfluid, helium dynamics
- Experimental and Theoretical Physics Studies
- Laser-Plasma Interactions and Diagnostics
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Urologic and reproductive health conditions
- Electromagnetic Scattering and Analysis
- Particle Detector Development and Performance
Institut de Physique Théorique
2014-2016
CEA Paris-Saclay
2014-2016
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2014-2016
Centre National de la Recherche Scientifique
2015-2016
Universidad Autónoma de Madrid
2011-2015
Brookhaven National Laboratory
2013-2015
Azienda Ospedaliera di Cosenza
2015
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Cosenza
2015
Consejo Superior de Investigaciones Científicas
2013
Instituto de Física Corpuscular
2013
We provide a concise overview on transverse momentum dependent (TMD) parton distribution functions, their application to topical issues in high-energy physics phenomenology, and theoretical connections with QCD resummation, evolution factorization theorems. illustrate the use of TMDs via examples multi-scale problems hadronic collisions. These include q_T spectra Higgs vector bosons for low q_T, azimuthal correlations production multiple jets associated heavy at large jet masses. discuss...
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...
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...
The goal of this report is to give a comprehensive overview the rich field forward physics, with special attention topics that can be studied at LHC.The starts presenting selection Monte Carlo simulation tools currently available, chapter 2, then enters phenomenology QCD low, 3, and high, 4, momentum transfer, while unique scattering conditions central exclusive production are analyzed in 5.The last two experimental topics, Cosmic Ray Heavy Ion physics presented 6 7 respectively.Chapter 8...
Ratios of azimuthal angle correlations between two jets produced at large rapidity separation are studied in the N=4 super Yang-Mills theory (MSYM). It is shown that these observables, which directly prove SL(2,C) symmetry present gauge theories Regge limit, exhibit an excellent perturbative convergence. They compared to those calculated QCD for different renormalization schemes concluding momentum-substraction (MOM) scheme with Brodsky-Lepage-Mackenzie (BLM) scale-fixing procedure captures...
We determine both real and virtual next-to-leading order corrections to the gluon induced forward jet vertex, from high energy effective action proposed by Lipatov. For these calculations we employ same regularization subtraction formalism developed in our previous work on quark-initiated vertex. find agreement with results literature.
We present the results for calculation of forward jet vertex associated to a rapidity gap (coupling hard pomeron jet) in Balitsky-Fadin-Kuraev-Lipatov (BFKL) formalism at next-to-leading order (NLO). handle real emission contributions making use high energy effective action proposed by Lipatov, valid multi-Regge and quasi-multi-Regge kinematics. This result is important since it allows, together with NLO non-forward gluon Green function, perform studies production diffractive events...
In the context of evolution equations and scattering amplitudes in high energy limit N=4 super Yang-Mills theory we investigate some detail BFKL gluon Green function at next-to-leading order. particular, study its collinear behaviour terms an expansion different angular components. We also perform a Monte Carlo simulation final states contributing to such construct diffusion pattern into infrared ultraviolet modes multiplicity distributions, making emphasis separating contributions from...
We present the NLO corrections for quark induced forward production of a jet with an associated rapidity gap. make use Lipatov's QCD high energy effective action to calculate real emission contributions so-called Mueller-Tang impact factor. combine them previously calculated virtual and verify ultraviolet collinear finiteness final result.
We complete the computation of Mueller–Tang jet impact factor at next-to-leading order (NLO) initiated in [1] and presented [2] by computing real corrections associated with gluons initial state making use Lipatov's effective action. NLO for this vertex are an important ingredient a reliable description large rapidity gap phenomenology within BFKL approach.
We review Lipatov's high energy effective action and show that it is a useful computational tool to calculate scattering amplitudes in (quasi)-multi-Regge kinematics. explain some detail our recent work where novel regularization subtraction procedure has been proposed allows extend the use of this beyond tree level. Two examples are calculated at next-to-leading order: forward jet vertices gluon Regge trajectory.
We discuss computational details of our recent result, namely, the first derivation two-loop gluon Regge trajectory within framework Lipatov's high energy effective action. In particular, we elaborate on direct evaluation Feynman diagrams by using Mellin-Barnes representations technique. Our result is in precise agreement with previous computations literature, providing this way a highly non-trivial test action and proposed subtraction renormalization scheme combined approach for treatment...
We discuss semi-classical string configurations at finite temperature. find that those soliton solution in the background describing type IIA strings disappear or become divergent when we approach Hagedorn temperature strong coupling regime. These findings together with a analysis for Hawking radiation let us to think is mainly driven by existence of highly excited states. As side, check beside thermodynamical instability system dynamical unstable before reaching
Ratios of azimuthal angle correlations for Mueller-Navelet jets are compared in QCD and N = 4 SYM. Such observables well suited to study the effects Moebius invariance Regge limit. The role renormalization prescription size conformal contributions is addressed, showing that BLM procedure best reproduces SYM results.
We present the calculation of forward jet vertex associated to a rapidity gap (coupling hard pomeron jet) in BFKL formalism at next-to-leading order (NLO). Real emission contributions are computed via Lipatov's effective action. The NLO turns out be finite within collinear factorization and allows, together with non-forward gluon Green's function, perform studies production diffractive events (e.g. Mueller-Tang dijets).
We discuss aspects of our recent derivation the gluon Regge trajectory at two loop from Lipatov's high energy effective action. show how can be rigorously defined through renormalization divergence reggeized propagator. furthermore provide some details on determination two-loop self-energy.
Perturbative corrections beyond leading-log accuracy to BFKL and BK equations, describing the rapidity evolution of QCD scattering amplitudes at high energy, exhibit strong convergence problems due radiative enhanced by large single double transverse logs.We identify explicitly physical origin logs resum them directly in coordinate space as appropriate for equation, terms an improved local-in-rapidity kernel.Numerical results show crucial role double-logarithmic resummation evolution, which...
We discuss computational details of our recent result, namely, the first derivation two-loop gluon Regge trajectory within framework Lipatov’s high energy effective action. In particular, we elaborate on direct evaluation Feynman diagrams by using Mellin-Barnes representations technique. Our result is in precise agreement with previous computations literature, providing this way a highly non-trivial test action and proposed subtraction renormalization scheme combined approach for treatment...
Linear and non-linear QCD evolutions at high energy suffer from severe issues related to convergence, due higher order corrections enhanced by large double single transverse logarithms. We resum logarithms all orders taking into account successive soft gluon emissions strongly ordered in lifetime. further generated the first non-singular part of splitting functions one-loop running coupling. The resulting collinearly improved BK equation admits stable solutions, which are used successfully...
Perturbative corrections beyond leading-log accuracy to BFKL and BK equations, describing the rapidity evolution of QCD scattering amplitudes at high energy, exhibit strong convergence problems due radiative enhanced by large single double transverse logs. We identify explicitly physical origin logs resum them directly in coordinate space as appropriate for equation, terms an improved local-in-rapidity kernel. Numerical results show crucial role double-logarithmic resummation evolution,...