2020-10-0110:49 Demonstrating learned particle decay reconstruction using Graph Neural Networks at BelleII / Ilias Tsaklidis ; Pablo Goldenzweig ; Isabelle Ripp-Baudot ; James Kahn ; et al [BELLE2-MTHESIS-2020-006] Presented on 19 06 2020 MSc 2020 Karlsruher Institut für Technologie (KIT), Institut Pluridisciplinaire Hubert CURIEN (IPHC) / Karlsruhe, Strasbourg The clean environment within Belle II, with decay processes originating from non-composite electron-positron pairs, allows for the reconstruction of the entire collision event. [...] Fulltext: PDF; 2020-09-1509:29 Preparing for Success: Search for a Heavy Non-qqbar Meson in Y(6S) Decays at Belle II / Shanette De La Motte ; Geoffrey Taylor [BELLE2-MTHESIS-2020-005] Presented on 17 12 2017 MSc 2017 University of Melbourne / Melbourne, Australia While qqbar mesons and qqq baryons are ubiquitous in particle physics, the higher order qqqbarqbar mesons and qqqqq baryons are rarely seen, despite being completely allowed by quantum chromodynamics. [...] Fulltext: PDF; 2020-09-1509:22 B-Physics in Lattice QCD and at Belle II / Sophie Hollitt ; Paul Jackson ; Ross Young ; James Zanotti [BELLE2-PTHESIS-2020-003] Presented on 10 03 2020 PhD 2020 University of Adelaide / Adelaide, Australia Theory and experiment both have key roles to play in our understanding of the Universe. [...] Fulltext: PDF; 2020-08-0611:47 Optimization of the z-Vertex Neural Network Trigger for the Belle II Experiment / Sara McCarney ; Christian Kiesling [BELLE2-MTHESIS-2020-004] Presented on 08 08 2019 MSc 2019 Max-Planck-Institute for Physics / Munich For the Belle II experiment at the SuperKEKB asymmetric electron-positron (e+/e-)collider (KEK, Japan) the concept of a first level (L1) track trigger, realized by neural networks, is presented [...] Fulltext: PDF; 2020-07-0808:05 Measurement of time-integrated CP asymmetry in D0->pipi and D0->KK with Belle II Monte Carlo data / Jaeyeon Kim ; Taehoon Lee ; Doris Yangsoo Kim ; Sookyung Choi [BELLE2-MTHESIS-2020-003] Presented on 06 04 2020 MSc 2020 Soongsil University / Seoul It could be the key of the new physics to measure Time-integrated CP asymmetry(A_CP) of Charm particles [...] Fulltext: PDF; 2020-05-2209:21 Extending the Full Event Interpretation to the Υ(5S) Resonance / Moritz Bauer ; Günter Quast ; Florian Bernlochner [BELLE2-MTHESIS-2020-002] Presented on 29 02 2020 MSc 2020 ETP Karlsruhe Institute of Technology / Karlsruhe The Full Event Interpretation is Belle II's algorithm to fully reconstruct B mesons in several thousand decay channels at the Y(4S) bottomonium resonance. [...] Fulltext: PDF; 2020-03-2916:01 Search for an invisibly decaying $Z^{\prime}$ dark boson at Belle II in $e^+ e^- \to \mu^+ \mu^- (e^{\pm} \mu^{\mp})$ + missing energy final states / Giacomo De Pietro ; Paolo Branchini ; Enrico Graziani [BELLE2-PTHESIS-2020-002] Presented on 16 03 2020 PhD 2020 Università degli Studi "Roma Tre" / Rome The Standard Model (SM) is a successful and highly predictive theory of fundamental particles and interactions. [...] Fulltext: PDF; 2020-02-0301:31 Search for an invisible $Z^\prime$ in $\mu^{+}\mu^{-}$ plus missing energy events at Belle II / Laura Zani ; Professor Francesco Forti [BELLE2-PTHESIS-2020-001] Presented on 24 01 2020 PhD 2020 University of Pisa / Pisa The Standard Model (SM) of particle physics has been proven by many experimental results to be a predictive theory and currently the best known description of the fundamental constituents of nature and their interactions. [...] Fulltext: PDF; 2020-01-2610:54 Optimization of the pi0 reconstruction selections for the Belle II experiment / Sebastian Stengel ; Concettina Sfienti ; Torben Ferber [BELLE2-MTHESIS-2020-001] Presented on 11 12 2019 MSc 2019 Johannes Gutenberg University, Institute of Nuclear Physics / Mainz The purpose of this thesis is to provide optimized selections for the π0 reconstruction in the Belle II analysis software framework (basf2). [...] Fulltext: PDF; 2019-12-0606:04 A study of beam background from SuperKEKB on Belle II Silicon Vertex Detector / Hikaru Tanigawa ; Yutaka Ushiroda [BELLE2-MTHESIS-2019-023] Presented on 31 01 2019 MSc 2019 The University of Tokyo / Tokyo The Belle II experiment plans to start its full operation in March 2019 hosted by KEK in Tsukuba, Japan. [...] Fulltext: PDF;