Abstract
Within five different approaches to parton propagation and energy loss in dense matter, a phenomenological study of experimental data on suppression of large- single inclusive hadrons in heavy-ion collisions at both the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC) was carried out. The evolution of bulk medium used in the study for parton propagation was given by 2 + 1 dimensional or 3 + 1 dimensional hydrodynamic models which are also constrained by experimental data on bulk hadron spectra. Values for the jet transport parameter at the center of the most central heavy-ion collisions are extracted or calculated within each model, with parameters for the medium properties that are constrained by experimental data on the hadron suppression factor . For a quark with initial energy of 10 GeV we find that GeV/fm at an initial time fm/ in Au + Au collisions at GeV/n and GeV/fm in Pb + Pb collisions at TeV/n. Compared to earlier studies, these represent significant convergence on values of the extracted jet transport parameter due to new constraints provided by recent experiment data from the LHC.
4 More- Received 22 December 2013
- Revised 23 June 2014
DOI:https://doi.org/10.1103/PhysRevC.90.014909
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