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Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 56: Heavy Ion Collisions and QCD Phases IX

HK 56.1: Group Report

Friday, March 2, 2018, 14:00–14:30, HZO 60

Hard probe measurements with the ALICE detector in Tübingen — •Martin Völkl for the ALICE collaboration — Universität Tübingen

Hard probes are useful tools in the investigation of QCD effects. In heavy-ion collisions they are produced almost exclusively at the early times of the interaction and their production cross section is accessible to perturbative calculations. The investigations in Tübingen currently focus on the measurement of beauty quarks and the identified fragmentation functions of jets. Both provide complementary information: The single particle measurement answers the questions about the exchange of energy of a hard parton with the system, while the measurement of fragmentation functions provides information about how the energy of the original parton appears in the final state. This provides an insight into whether the particle production in jets is modified in p–Pb collisions via cold-nuclear-matter effects or how beauty quarks participate in the collective expansion of the system in Pb–Pb collisions. In this report, the current status and results of the analyses will be presented.

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