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Development of an event generator for antihyperon-hyperon pair production in antiproton-proton collisionsShen, Vitor Jose January 2022 (has links)
The goal of this project was to develop a lightweight Monte-Carlo (MC) event generator for hyperon pair production in antiproton-proton collisions, and demonstrate it in one of the hyperon decay reaction channels, which is collisions of proton and antiproton to lambda hyperon and anti-lambda hyperon, and they decay to antiproton-positive pion pair, and proton-negative pion pair. The prototype of this external MC event generator we presented here is based on the software framework of ROOT. Compared to the corresponding framework of embedded MC event generators that is currently used in the PANDA experiment at FAIR, PandaRoot, it allows for easier and quicker testing of new models or formalisms on synthetic data, for example for studying spin observables like polarisation. The event generator was benchmarked by studying angular distributions in final states, which are constructed by kinematic relations of 4-momentum vectors in different reference frames for all mother and daughter particles.
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Event generation at hadron collidersSchälicke, Andreas 04 July 2005 (has links) (PDF)
Diese Arbeit befasst sich mit der Simulation von hochenergetischen Hadron-Kollisionsexperimenten, wie sie im Moment am Tevatron (Fermilab) durchgeführt werden und in naher Zukunft am Large Hadron Collider (LHC) am CERN zu erwarten sind. Für die Beschreibung dieser Experimente wird ein Algorithmus untersucht, der es ermöglicht, exakte Multijet-Matrixelemente auf Baumgraphenniveau in die Simulation einzubeziehen und so die Qualität der Vorhersage deutlich zu verbessern. Die Implementierung dieses Algorithmus in den Eventgenerator "SHERPA" und die Erweiterung des Parton Showers in diesem Programm ist das Hauptthema dieser Arbeit. Die Ergebnisse werden mit experimentellen Daten und mit anderen Simulationen verglichen. / This work deals with the accurate simulation of high energy hadron-hadron-collision experiments, as they are currently performed at Fermilab Tevatron or as they are expected at the Large Hadron Collider at CERN. For a precise description of these experiments an algorithm is investigated, which enables the inclusion of exact multi-jet matrix elements in the simulation. The implementation of this algorithm in the event generator "SHERPA" and the extension of its parton shower is the main topic of this work. The results are compared with those of other simulation programs and with experimental data.
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Event generation at hadron collidersSchälicke, Andreas 15 July 2005 (has links)
Diese Arbeit befasst sich mit der Simulation von hochenergetischen Hadron-Kollisionsexperimenten, wie sie im Moment am Tevatron (Fermilab) durchgeführt werden und in naher Zukunft am Large Hadron Collider (LHC) am CERN zu erwarten sind. Für die Beschreibung dieser Experimente wird ein Algorithmus untersucht, der es ermöglicht, exakte Multijet-Matrixelemente auf Baumgraphenniveau in die Simulation einzubeziehen und so die Qualität der Vorhersage deutlich zu verbessern. Die Implementierung dieses Algorithmus in den Eventgenerator "SHERPA" und die Erweiterung des Parton Showers in diesem Programm ist das Hauptthema dieser Arbeit. Die Ergebnisse werden mit experimentellen Daten und mit anderen Simulationen verglichen. / This work deals with the accurate simulation of high energy hadron-hadron-collision experiments, as they are currently performed at Fermilab Tevatron or as they are expected at the Large Hadron Collider at CERN. For a precise description of these experiments an algorithm is investigated, which enables the inclusion of exact multi-jet matrix elements in the simulation. The implementation of this algorithm in the event generator "SHERPA" and the extension of its parton shower is the main topic of this work. The results are compared with those of other simulation programs and with experimental data.
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