SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Heavy-Ion Collisions and QCD Phases III

HK 16.4: Vortrag

Dienstag, 21. März 2023, 18:00–18:15, SCH/A216

Hypernuclei studies in heavy-ion collisions at CBM — •Susanne Gläßel and Christoph Blume — IKF Frankfurt

Under the extreme conditions of relativistic heavy-ion-collisions the creation of exotic matter like hypernuclei is possible. Hypernuclei measurements provide insights into the equation-of-state of hadronic matter at high net-baryon densities, as well as into hyperon-nucleon and hyperon-hyperon-interactions. The Compressed Baryonic Matter (CBM) experiment at the future Facility for Anti-Proton and Ion Research (FAIR) in Darmstadt offers the perfect conditions to explore the production of hypernuclei. At beam energies of around 12A GeV, in combination with high interaction rates of up to 10 MHz, an exceptionally high amount of hypernuclei will be created, and even very rare double hypernuclei like _ΛΛ⁶He are expected. The reconstruction of hypernuclei was implemented into the CBM software PFSimple and optimized with respect to important performance indicators. Expected efficiencies and signal-to-background-ratios were calculated for a reliable estimation of the number of reconstructable hypernuclei; the detector areas with the best performance were identified. Systematical uncertainties were estimated based on simulations from different transport models, like e.g. the novel PHQMD approach, as well as on the signal extrapolation to the full rapidity and transverse momentum range. The experimental sensitivity to properties of hypernuclei, such as their lifetime, was evaluated. Results for _Λ³H will be discussed as an example. DFG-grant BL 982/3-1, DFG-grant BR 4000/7-1.