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HK: Fachverband Physik der Hadronen und Kerne

HK 25: Heavy-Ion Collisions and QCD Phases VI

HK 25.4: Vortrag

Mittwoch, 1. April 2020, 14:45–15:00, J-HS G

Probing the path-length dependence of jet energy loss with correlation functions in JEWEL — •Luisa Bergmann for the ALICE collaboration — Physikalisches Institut, Universität Heidelberg

In relativistic heavy-ion collisions, a deconfined medium with high energy density is created, the quark-gluon plasma. Amongst other observables, jets – originating from primordial hard scatterings – act as useful probes for the properties of this medium. As the initial partons traverse the quark-gluon plasma, they lose energy by interacting with the constituents of the medium. The study of this so called "jet quenching" yields insight into the properties of the medium.

This talk focuses on the study of the path-length dependence of energy loss via correlation functions. By analyzing the angular dependence of the distribution of charged hadrons in two-particle and multi-hadron correlations, one obtains the informations in a statistical approach which is independent of particular jet definitions and sensitive in regions with high background contributions. To provide a well formed basis for future data analyses, the analysis of correlations is first performed with models, in particular by employing JEWEL. The usage of Monte-Carlo event generators offers the possibility to gain knowledge about the interaction processes in a controlled environment, which can then be used to understand structures in real data. This information ultimately helps to constrain the models of energy loss and of interactions of colored probes and media.