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Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 29: Heavy Ion Collisions and QCD Phases VI

HK 29.1: Group Report

Wednesday, March 29, 2017, 16:45–17:15, F 1

Recent results on two-particle correlation measurements in pp and Pb–Pb collisions from ALICE — •Alice Ohlson for the ALICE collaboration — Physikalisches Institut, Universität Heidelberg

Two-particle correlation measurements are commonly performed in high energy heavy-ion collision experiments to investigate diverse phenomena such as jet fragmentation and its modification in a heavy-ion environment, collectivity and the hydrodynamic-like behaviour of the quark–gluon plasma (QGP), and femtoscopic effects. Surprising results have also arisen from angular correlation studies in smaller collision systems, which normally serve as a baseline for heavy-ion measurements. In particular, the presence of correlations between particles separated by large pseudorapidity intervals (known as the ‘ridge’) in pp and p–Pb collisions has recently led to reevaluations of our understanding of collective effects in both small and large collision systems. In this talk we will present the latest two-particle correlation results from the ALICE Collaboration, including new results on the multiplicity evolution of correlation functions in pp collisions at √s = 7 and 13 TeV, the pathlength-dependence of jet quenching in Pb–Pb collisions at √sNN = 2.76 TeV, and correlations of identified particles which inform our understanding of particle production throughout the collision evolution.

Supported by BMBF and SFB 1225 ISOQUANT.

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