Physics probed by the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>P</mml:mi><mml:mi>T</mml:mi></mml:msub></mml:math>dependence of the nuclear suppression factor

Renk, Thorsten

doi:10.1103/physrevc.88.014905

Cited by 30 publications

(48 citation statements)

References 34 publications

(64 reference statements)

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“…Though many models can describe the observed jet quenching at RHIC quite well by adjusting parameters, there exist differences in the implementation of parton energy loss in jet quenching models [49]. New data from LHC experiments have lent support to some of these models [50][51][52] while challenging others [26,27,53]. Even within those models that can describe experimental data, the combined data from experiments at RHIC and LHC provide unprecedented constraints on the medium parameters as probed by jet quenching.…”

Section: Introductionmentioning

confidence: 99%

Extracting the jet transport coefficient from jet quenching in high-energy heavy-ion collisions

et al. 2014

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(The JET Collaboration)Within five different approaches to parton propagation and energy loss in dense matter, a phenomenological study of experimental data on suppression of large pT single inclusive hadrons in heavy-ion collisions at both RHIC and LHC was carried out. The evolution of bulk medium used in the study for parton propagation was given by 2+1D or 3+1D hydrodynamic models which are also constrained by experimental data on bulk hadron spectra. Values for the jet transport parameterq 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 RAA. For a quark with initial energy of 10 GeV we find that q ≈ 1.2 ± 0.3 GeV 2 /fm at an initial time τ0 = 0.6 fm/c in Au+Au collisions at √ s = 200 GeV/n andq ≈ 1.9 ± 0.7 GeV 2 /fm in Pb+Pb collisions at √ s = 2.76 TeV/n. Compared to earlier studies, these represent significant convergence on values of the extracted jet transport parameter, reflecting recent advances in theory and the availability of new experiment data from the LHC.

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Section: Introductionmentioning

confidence: 99%

Extracting the jet transport coefficient from jet quenching in high-energy heavy-ion collisions

et al. 2014

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“…YaJEM, however, exhibits a slightly steeper increase with jet p T than the data. [8] and JEWEL [9]. The boxes at R AA = 1 represent the systematic uncertainty on < T AA >.…”

Section: Jet Nuclear Modification Factormentioning

confidence: 99%

“…The first model, YaJEM [8], uses a 2+1D hydrodynamical model to calculate medium transport coefficients which describe the coupling between partons and medium and modify the kinematics of the virtual partons in the evolving parton shower through an increase in virtuality. The second model, JEWEL [9], models energy loss in the presence of a QCD medium microscopically through multiple scattering and gluon radiation, including a Monte Carlo (MC) implementation of LPM interference effects.…”

Section: Jet Nuclear Modification Factormentioning

confidence: 99%

Jets in Pb–Pb collisions at ALICE

Busch

2017

EPJ Web Conf.

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Abstract. We report results on jet production in Pb-Pb collisions at √ s NN = 2.76 TeV from the ALICE collaboration. The nuclear modification factor of jets reconstructed with a resolution parameter R=0.2 shows a strong, centrality dependent suppression with respect to pp collisions. The azimuthal anisotropy of charged jet production relative to the event plane is studied. In semi-peripheral events, a significant v ch jet 2 is observed, indicating path-length dependent in-medium parton energy loss. The measurement of jet shapes allows characterizing the intra-jet momentum flow of quenched jets. The measured radial moment and dispersion of the constituent transverse momentum distribution indicate a collimation and hardening of the jet core in Pb-Pb relative to pp collisions.

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“…directly images ǫ n in position space. While it can be shown that the energy degradation of the leading parton peaks between 1-2 fm/c [3], it is also known that high P T v 2 has sensitivity to late time dynamics which may reach well into the hadronic phase around 5-7 fm/c [4].…”

Section: Introductionmentioning

confidence: 99%

Zeroing in on the initial state — tomography using bulk, jets and photons

Renk¹,

Chatterjee²,

Eskola³

et al. 2014

Nuclear Physics A

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One of the unsolved problems in the current 'standard model' of heavy ion physics is the apparent rapid thermalization of QCD matter in the pre-equilibrium stage. While it is challenging to probe this mechanism directly, there are now several observables available which allow tomographic imaging of the initial state geometry, which is expected to carry remnant information of the equilibration mechanism. On the fluid dynamics side, scaled fluctuations in the momentum space anisotropy parameters v n image the initial eccentricity fluctuations ǫ n almost directly with only a weak dependence on the details of the fluid dynamical evolution. From a different direction, due to the strong non-linear dependence of their emission rates on temperature, thermal photons and their v n are very sensitive to the initial state graininess. Finally, the v 2 and v 3 of high P T hadrons coming from hard processes reflect the attenuation pattern of partons propagating through the inhomogeneous matter density after some fluid dynamical evolution. Combining information from all these channels does not yet lead to a fully consistent picture, however intriguing trends pointing towards non-trivial initial state dynamics emerge.

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Physics probed by thePTdependence of the nuclear suppression factor

Cited by 30 publications

References 34 publications

Extracting the jet transport coefficient from jet quenching in high-energy heavy-ion collisions

Extracting the jet transport coefficient from jet quenching in high-energy heavy-ion collisions

Jets in Pb–Pb collisions at ALICE

Zeroing in on the initial state — tomography using bulk, jets and photons

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