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 high-momentum hadron 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/ψ). We obtain 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.
Highlights
Jet suppression [1] of light and heavy observables provides an excellent tool [2,3,4] for studying properties of QCD matter created in ultra-relativistic heavy ion collisions
With a major goal of generating these predictions, we developed dynamical energy loss formalism, that i) allows treating, at the same time, both light and heavy partons, ii) is computed in dynamical QCD medium, iii) includes both collisional [5] and radiative [6, 7] energy losses, computed within the same theoretical framework, iv) includes realistic finite size effects, i.e. the fact that experimentally created QCD medium has finite size, and that the jets are produced inside the medium, v) includes finite magnetic mass effects [8] and running coupling [9]
We further integrated this formalism into numerical procedure which includes multi-gluon fluctuations [10], path length fluctuations [11] and most up-to-date jet production [12, 13] and fragmentation functions [14]; the procedure allows generating predictions with no free parameters used in comparison with experimental data
Summary
Jet suppression [1] of light and heavy observables provides an excellent tool [2,3,4] for studying properties of QCD matter created in ultra-relativistic heavy ion collisions. With a major goal of generating these predictions, we developed dynamical energy loss formalism, that i) allows treating, at the same time, both light and heavy partons, ii) is computed in dynamical QCD medium (i.e. takes into account recoil of the medium constituents), iii) includes both collisional [5] and radiative [6, 7] energy losses, computed within the same theoretical framework, iv) includes realistic finite size effects, i.e. the fact that experimentally created QCD medium has finite size, and that the jets are produced inside the medium, v) includes finite magnetic mass effects [8] and running coupling [9]. Such comprehensive comparison allows testing some of important assumptions behind our current understanding of the created QCD matter, such as ranges of validity for different medium models
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