Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Heavy Ion Collisions and QCD Phases IV

HK 20.1: Gruppenbericht

Dienstag, 28. März 2017, 14:00–14:30, F 1

Femtoscopy in Pb-Pb collisions with ALICE — •Hans Beck for the ALICE collaboration — University of Heidelberg

Femtoscopy exploits quantum-statistical and final-state interaction induced correlations to probe the spatio-temporal extent of the particle emitting source. We review the most recent results in Pb-Pb collisions by ALICE; among them measurements involving strangeness-carrying baryons, where the aim is to determine the strong two-body interaction potentials as well as source dynamics through the investigation of the transverse mass dependence of source radii. The latter is also performed with identical kaon pair measurements, where new three-dimensional results highlight the importance of the inclusion of a hadronic phase in the modeling of heavy-ion collisions. New avenues are pursued with non-identical kaon pair measurements which inter alia might identify a tetra-quark particle. We conclude by showing source extent studies with respect to the event plane and will outline prospective analyses, e.g. photon-photon correlation measurements.