Hyperon Studies at GSI: Λ Reconstrution in Proton Proton Collisions at 2.2 GeV with HADES and in Antiproton – Proton Interactions for the Future PANDA Experiment

Strangeness physics studies can address many unsolved fundamental questions. In this thesis different strangeness production scenarios offered by the GSI and the future FAIR facilities were explored. In particular the study of the Lambda hyperon and its charged decay channel (Lambda → pπ−) were subject of this work. In the first part of this thesis, the pp → pK+Lambda reaction was investigated within the HADES experiment. The second part of this work is dedicated to pbar p → LambdaLambdabar interaction, considered as a benchmark channel for the future PANDA experiment. This reaction is well suited to compare two different tracking options for the PANDA spectrometer. In this work, it is demonstrated that with the HADES spectrometer it is possible to reconstruct Lambda particles produced in elementary reactions. The performed comparison of different tracking options for the PANDA spectrometer point out that further optimizations and tests are needed before a choice of the best detector option can be made. The results of Lambda hyperon reconstruction within both experiments, and of the performed studies are here presented as main purpose of this work.