# PhD Theses

 2021-06-1411:31 Development and Deployment of a Deep Neural Network based Flavor Tagger for Belle II / Jochen Gemmler ; Prof. Michael Feindt ; Prof. Florian Bernlochner [ETP-KA/2020-11] [BELLE2-PTHESIS-2021-005] Presented on 15 05 2020 PhD 2020 Karlsruhe Institute of Technology / Karlsruhe In this thesis a flavor tagging algorithm based on these Deep Learning methods is developed and investigated. [...] Fulltext: PDF; 2021-04-2706:53 CLAWS - a novel time resolved study of backgrounds during the first commissioning phase of SuperKEKB / Miroslav Alois Aaron Maria Gabriel ; Prof. Dr. Nora Brambilla ; Prof. Dr. Allen Caldwell ; Prof. Dr. Stephan Paul [BELLE2-PTHESIS-2021-004] Presented on 30 10 2019 PhD 2019 Max-Planck-Institut für Physik / Munich Abstract The asymmetric e+e􀀀 collider SuperKEKB is a second generation flavor factory designed to achieve an unprecedented luminosity of 8 1035 cm􀀀2s􀀀1, a factor 40 higher than its record-breaking predecessor KEKB. [...] Fulltext: PDF; 2021-04-2422:10 Search for the decay Bs0 → η' Xss̄ Using a Semi-Inclusive Method at the Belle Experiment / Shawn Dubey ; Thomas E. Browder [BELLE2-PTHESIS-2021-003] Presented on 19 12 2020 PhD 2020 University of Hawaii/ProQuest / Honolulu, HI The decay Bs0 → η' Xss̄ is searched for at Belle, using Belle’s 121.4 fb − 1 integrated luminosity data sample, taken at Υ( 5S ) resonance. [...] Fulltext: PDF; 2021-04-2213:14 High Speed Data Multiplexer for the Belle II Pixel Detector & Search for an Exotic Resonance at the D*0 anti-D*0 Threshold in Charged B Meson Decays / Klemens Lautenbach ; Jens Sören Lange [BELLE2-PTHESIS-2021-002] Presented on 08 02 2021 PhD 2021 II. Institute of Physics (Subatomic Physics) / Giessen In the physics part of the thesis, the exotic state X(4014) is studied for Belle II. [...] Fulltext: PDF; 2021-02-1420:27 Search for new physics in B0 radiative decays and measure of their lifetime with the Belle II experiment / Reem RASHEED ; Jerome BAUDOT [BELLE2-PTHESIS-2021-001] Presented on 18 12 2020 PhD 2020 IPHC / Strasbourg After the Big Bang matter and antimatter were present in equal amounts [...] 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; 2020-03-2916:01 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; 2019-11-2704:04 Measurement of the CKM angle $\boldsymbol{\phi_3}$ from $\boldsymbol{B^{\pm}\to D(K_{\rm S}^0\pi^+\pi^-\pi^0)K^{\pm}}$ decays and future prospects / Resmi P K ; Jim Libby [BELLE2-PTHESIS-2019-003] Presented on 26 11 2019 PhD 2019 Indian Institute of Technology Madras / Chennai, India We present the first model-independent measurement of the CKM unitarity triangle angle phi3 using B->D(KsPiPiPi0)K decays, where D indicates either a D0 or D0bar meson [...] Fulltext: PDF; 2019-07-0914:19 Combinatorial Kalman Filter and High Level Trigger Reconstruction for the Belle II Experiment / Nils Braun ; Prof. Dr. Michael Feindt ; Prof. Dr. Florian U. Bernlochner [BELLE2-PTHESIS-2019-002] Presented on 21 12 2018 PhD 2018 Karlsuhe Institute of Technology / Karlsruhe The Belle II detector is introduced in Chapter 2 with a focus on the tracking subdetectors and the trigger setup required for this thesis. [...] Fulltext: PDF;