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The Belle II vertex detector alignment studies and prompt sin 2 phi analysis
Kandra, Jakub ; Doležal, Zdeněk (advisor)
This thesis is focused on the alignment studies of the vertex detector during first years of the Belle II detector operation and the first prompt sin 2ϕ1 analysis using the first rel- evant data collected by the detector. Firstly, the Belle II detector and the SuperKEKB accelerator is introduced. Secondly, the software framework and tools operation is ex- plained, then the alignment procedure and developed validation procedures are described in detail. Fourth section reports about the first years of the detector operation. Next three sections are related to different alignment studies during thee different periods of the vertex detector operation: the Phase 2, VXD Commissioning and beginning of the Phase 3 early. The last section covers the time-dependent CP Violation and mixing measurements performed using the data collected prior to the 11en of May 2020. 1
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The Belle II vertex detector alignment studies and prompt sin 2 phi analysis
Kandra, Jakub ; Doležal, Zdeněk (advisor) ; Kvita, Jiří (referee) ; Marčišovský, Michal (referee)
This thesis is focused on the alignment studies of the vertex detector during first years of the Belle II detector operation and the first prompt sin 2ϕ1 analysis using the first rel- evant data collected by the detector. Firstly, the Belle II detector and the SuperKEKB accelerator is introduced. Secondly, the software framework and tools operation is ex- plained, then the alignment procedure and developed validation procedures are described in detail. Fourth section reports about the first years of the detector operation. Next three sections are related to different alignment studies during thee different periods of the vertex detector operation: the Phase 2, VXD Commissioning and beginning of the Phase 3 early. The last section covers the time-dependent CP Violation and mixing measurements performed using the data collected prior to the 11en of May 2020. 1
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Simulation of Belle II physics events and performance tests of reconstruction software
Kandra, Jakub ; Kvasnička, Peter (advisor) ; Řezníček, Pavel (referee)
This thesis is about the alignment of vertex semiconductor detectors of the Belle II experiment. It is divided into several sections. The first part introduces the Belle II experiment as a new generation B- factory, with its ambitious plans of data taking and physical analysis. The second part follows with a more detailed description of Belle II detector and software tools designed for their alignment and calibration. The central part of the thesis describes physical processes used for calibration of the vertex detector, connected with the search of an optimal solution for run-time monitoring and calibration of the detector. We also tested the effect of misalignment on the Belle II tracking software. The following part gives results of the study of misalignment effects on physical observables related to analysis of selected physical channels. The last part describes the development of a data quality monitoring tool for the tracking system. The tools has to provide a run-time diagnostic of misalignment and miscalibration by monitoring the precision and accuracy of reconstruction of physical observables. Powered by TCPDF (www.tcpdf.org)
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Studium řídkých procesů na experimentu NA62 v CERN
Kandra, Jakub ; Kampf, Karol (advisor) ; Kolesár, Marián (referee)
The primary objective is study of neutral pion decay into the Dalitz pair and photon. The thesis has two important parts, theoretical and experimental. The task of theoretical part is the analysis of studied decay mode with prediction of branching ratio of this decay. The next part should prove the theoretical prediction. The proof was done at real data at run 2007 of the experiment NA62 in European organization for nuclear research. The another task of this thesis is shown the modern methods of theoretical analysis and experimental measurement branching ratio. Powered by TCPDF (www.tcpdf.org)
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