A local Monte Carlo framework for coherent QCD parton energy loss
arXiv:1103.6252 · doi:10.1007/JHEP07(2011)118
Abstract
Monte Carlo (MC) simulations are the standard tool for describing jet-like multi-particle final states. To apply them to the simulation of medium-modified jets in heavy ion collisions, a probabilistic implementation of medium-induced quantum interference effects is needed. Here, we analyze in detail how the quantum interference effects included in the BDMPS-Z formalism of medium-induced gluon radiation can be implemented in a quantitatively controlled, local probabilistic parton cascade. The resulting MC algorithm is formulated in terms of elastic and inelastic mean free paths, and it is by construction insensitive to the IR and UV divergences of the total elastic and inelastic cross sections that serve as its basic building blocks in the incoherent limit. Interference effects are implemented by reweighting gluon production histories as a function of the number of scattering centers that act within the gluon formation time. Unlike existing implementations based on gluon formation time, we find generic arguments for why a quantitative implementation of quantum interference cannot amount to a mere dead-time requirement for subsequent gluon production. We validate the proposed MC algorithm by comparing MC simulations with parametric dependencies and analytical results of the BDMPS-Z formalism. In particular, we show that the MC algorithm interpolates correctly between analytically known limiting cases for totally coherent and incoherent gluon production, and that it accounts quantitatively for the medium-induced gluon energy distribution and the resulting average parton energy loss. We also verify that the MC algorithm implements the transverse momentum broadening of the BDMPS-Z formalism. We finally discuss why the proposed MC algorithm provides a suitable starting point for going beyond the approximations of the BDMPS-Z formalism.
49 pages, 13 figures, v2: typos corrected
References in corpus (34)
- A Brief Introduction to PYTHIA 8.1
- Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
- Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
- Event generation with SHERPA 1.1
- Herwig++ Physics and Manual
- Radiative energy loss and -broadening of high energy partons in nuclei
- Radiative energy loss of high energy quarks and gluons in a finite volume quark-gluon plasma
- HIJING 1.0: A Monte Carlo Program for Parton and Particle Production in High Energy Hadronic and Nuclear Collisions
- Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at sqrt(S(NN))= 2.76 TeV with the ATLAS Detector at the LHC
- Fully quantum treatment of the Landau--Pomeranchuk--Migdal effect in QED and QCD
- Reaction Operator Approach to Non-Abelian Energy Loss
- Multiple Collisions and Induced Gluon Bremsstrahlung in QCD
- Radiative energy loss of high energy quarks in finite-size nuclear matter and quark-gluon plasma
- Gluon Radiation off Hard Quarks in a Nuclear Environment: Opacity Expansion
- Multiple Parton Scattering in Nuclei: Parton Energy Loss
- Suppression of charged particle production at large transverse momentum in central Pb-Pb collisions at TeV
- Photon and Gluon Emission in Relativistic Plasmas
- A model of jet quenching in ultrarelativistic heavy ion collisions and high-pt hadron spectra at RHIC
- Matter in extremis: ultrarelativistic nuclear collisions at RHIC
- Antiangular Ordering of Gluon Radiation in QCD Media
- Heavy ion event generator HYDJET++ (HYDrodynamics plus JETs)
- Q-PYTHIA: a medium-modified implementation of final state radiation
- A Monte Carlo Model for 'Jet Quenching'
- Medium Modification of Jet Shapes and Jet Multiplicities
- Jet Quenching via Jet Collimation
- A local Monte Carlo implementation of the non-abelian Landau-Pomerantschuk-Migdal effect
- Indications of suppressed high p_T hadron production in nucleus-nucleus collisions at CERN-SPS
- Semi-Hard Scattering Unraveled from Collective Dynamics by Two-Pion Azimuthal Correlations in 158 A GeV/c Pb + Au Collisions
- Jet Reconstruction in Heavy Ion Collisions
- Inclusive cross section and correlations of fully reconstructed jets in 200 GEV Au+Au and p+p collisions
- Probing medium-induced energy loss with direct jet reconstruction in p+p and Cu+Cu collisions at PHENIX
- Measurements of jet structure and fragmentation from full jet reconstruction in heavy ion collisions at RHIC
- Angular-ordered parton showers with medium-modified splitting functions
- Monte Carlo simulations of jet quenching in heavy ion collisions
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- A perturbative framework for jet quenching
- The ALICE experiment: a journey through QCD
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- JEWEL 2.0.0 - Directions for Use
- Jet Structure in Heavy Ion Collisions
- Jet quenching and medium response in high-energy heavy-ion collisions: a review
- Medium response in JEWEL and its impact on jet shape observables in heavy ion collisions
- The radiation pattern of a QCD antenna in a dense medium
- Jet-Medium Interactions at NLO in a Weakly-Coupled Quark-Gluon Plasma
- Deciphering the distribution in ultrarelativistic heavy ion collisions
- Angular structure of the in-medium QCD cascade
- Elastic and radiative heavy quark interactions in ultra-relativistic heavy-ion collisions
- A modified-Boltzmann approach for modeling the hot QCD medium-induce splitting vertices in the deep LPM region
- The LPM effect in sequential bremsstrahlung
- Geometrical aspects of jet quenching in JEWEL
- Angular distribution of medium-induced QCD cascades
- The LPM effect in sequential bremsstrahlung 2: factorization
- Jet Wake from Linearized Hydrodynamics
- Influence of multiple in-medium scattering processes on the momentum imbalance of reconstructed di-jets
- Simulating V+jet processes in heavy ion collisions with JEWEL
- Shining a Gluon Beam Through Quark-Gluon Plasma
- Medium-induced fragmentation and equilibration of highly energetic partons
- Linear Boltzmann transport for jet propagation in the quark-gluon plasma: Inelastic processes and jet modification
- Medium Response and Jet-Hadron Correlations in Relativistic Heavy-Ion Collisions
- Out of Medium Fragmentation from Long-Lived Jet Showers
- Jet charge in high energy nuclear collisions
- Differential measurements of jet substructure and partonic energy loss in AuAu collisions at GeV
- On the breaking of Casimir scaling in jet quenching
- Coherent Radiative Parton Energy Loss beyond the BDMPS-Z Limit
- Monte Carlo Tools for Jet Quenching
- A background estimator for jet studies in p+p and A+A collisions
- Jet transport coefficients by elastic and radiative scatterings in the strongly interacting quark-gluon plasma
- How many interactions does it take to modify a jet?