Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 53: Heavy Ion Collisions and QCD Phases 6
HK 53.5: Vortrag
Donnerstag, 26. März 2015, 15:45–16:00, T/HS1
A new approach to detect hypernuclei in the QMD/HSD phase space distribution at relativistic energies — •Arnaud Le Fèvre1, Yvonne Leifels1, Jörg Aichelin2, Christoph Hartnack2, Elena Bratkovskaya3, and Victor Kyreyev4 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — 2SUBATECH, UMR 6457, Ecole des Mines de Nantes - IN2P3/CNRS - Université de Nantes, France — 3FIAS, Francfort University, Germany — 4JINR, Dubna, Russia
We developed an improved clusterisation algorithm which aims at predicting more realistically the yields of clusters in the framework of the Quantum Molecular Dynamics model. This new approach is able to predict isotope yields as well as hypernucleus production at relativistic energies. To illustrate its predicting power, we confront this new method to experimental data, with a close view on light hypernucleus yields and phase space distributions, and show the sensitivity on the parameters which govern the hypercluster formation, such as the hyperon-nucleon cross-section, the clusterisation time, the initial momentum distribution of nucleons and the asymmetry energy.