München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster

HK 54.18: Poster

Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium

Investigations on light (ant-)hypernuclei with ALICE at the LHC — •Janik Ditzel for the ALICE collaboration — Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany

At the Large Hadron Collider at CERN copious production of light (anti-)(hyper-)nuclei has been measured in Pb–Pb collisions by the ALICE Collaboration. The excellent performance of the Inner Tracking System, the Time Projection Chamber and the Time-Of-Flight detector of the ALICE apparatus provide a clear identification and separation of primary produced light (anti-)nuclei from secondaries. ALICE is currently starting its upgrade of the detector setup to cope with the interaction rate of 50 kHz in Pb–Pb collisions. This will lead to an even larger sample of light (anti-)(hyper-)nuclei. One object to study is the hypertriton - a bound state of a proton, a neutron and a Λ hyperon. It is reconstructed by reconstructing its decay products, e.g. in the charged two-body decay channel Λ3H3He + π. In order to predict the yields of the (anti-)hypertriton and also (double-)(anti-)(hyper-)hypernuclei of mass number A=4 and A=5, it is essential to study the acceptance x efficiency in Monte Carlo simulations. The investiagted decay channel channels are: Λ5He4He + p, Λ5He3He + d + π, Λ4He3He + p + π, Λ4H4He + π, Λ4Ht + p + π and ΛΛ4HΛ4He + π. We will present the status of the investigations of these (double-)(anti-)(hyper-)hypernuclei.

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