RHIC and LHC jet suppression in non-central collisions

Abstract

Understanding properties of QCD matter created in ultra-relativistic heavy-ion collisions is a major goal of RHIC and LHC experiments. An excellent tool to study these properties is jet suppression of light and heavy flavor observables. Utilizing this tool requires accurate suppression predictions for different experiments, probes and experimental conditions, and their unbiased comparison with experimental data. With this goal, we here extend our dynamical energy loss formalism towards generating predictions for non-central collisions; the formalism takes into account both radiative and collisional energy loss, dynamical (as opposed to static) scattering centers, finite magnetic mass, running coupling and uses no free parameters in comparison with experimental data. Specifically, we here generate predictions for all available centrality ranges, for both LHC and RHIC experiments, and for four different probes (charged hadrons, neutral pions, D mesons and non-prompt $J/\psi$). We obtain a very good agreement with all available non-central data, and also generate predictions for suppression measurements that will soon become available. Finally, we discuss implications of the obtained good agreement with experimental data with different medium models that are currently considered.Comment: 6 pages, 4 figure

Suppression and energy loss in Quark-Gluon Plasma

“…All the predictions will be generated by the same formalism, with the same numerical procedure, and with no free parameters used in model testing. Actually, all used parameters correspond to the standard literature values, as stated in [7]. [4].…”

“…We next generate predictions for non-central collisions and compare them with available LHC [41][42][43] and RHIC [40] data. In these proceedings, we concentrate on the case when the suppression is measured for fixed momentum range and the changing centrality (for additional comparisons, see [7]), for different probes at RHIC and LHC. We see RHIC data for neutral pions, and LHC data for charged hadrons, D mesons, and non-photonic J/Ψ.…”

“…Due to this, we will mainly concentrate on theoretical energy loss and suppression predictions, and how well these predictions can explain the experimental data. Note that in these proceedings only the main results will be reviewed; for the full account, the reader should refer to [4][5][6][7][8]. Figure 1 shows a scheme, which represents the main steps in the suppression calculations.…”

Addendum to: Centrality dependence of high-pT D-meson suppression in Pb-Pb collisions at s N N = 2.76 $$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}}=2.76 $$ TeV

“…In figures 2 and 3 these measurements are compared with model calculations [4][5][6], as originally done in [1]. Figure 3.…”

“…uncert. [4] including radiative and collisional energy loss. Lines of the same style enclose a band representing the theoretical uncertainty.…”