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155.
| Development of a Semi-Inclusive Tagging Algorithm and Implementation of a Continuum Suppression in the Full Event Interpretation for the Belle II Experiment
/ Gianna Mönig
[BELLE2-MTHESIS-2022-004]
Presented on 31 08 2021 MSc
2021
Physikalisches Institut Bonn
/ Bonn
In this thesis a novel hybrid approach to tag-side reconstruction is presented, where the tag-side is only partially reconstructed in order to improve the purity compared to the inclusive tagging, while retaining a high efficiency. [...]
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156.
| SEARCH FOR B → K (∗) ν ν̄ DECAYS IN BELLE II
/ Lucas MARTEL ; Isabelle RIPP-BAUDOT ; Giulio DUJANY
[BELLE2-MTHESIS-2022-003]
Presented on 18 06 2020 MSc
2020
Universite de Strasbourg
/ Strasbourg, France
The B → K (∗) ν ν̄ decay channel, never discovered to this day, is actively sought for in the Belle II experiment. [...]
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157.
| Trouver le méson B d’origine à l’aide d’un réseau de neurones à graphes à Belle II
/ Alizée Brouillard ; Giulio Dujany
[BELLE2-MTHESIS-2022-002]
Presented on 08 09 2021 MSc
2021
Université de Strasbourg
/ Strasbourg
To find new physics beyond Standard Model, the Belle II experiment performs precision measurements to bring to light deviations between theory and experimental data. [...]
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158.
| Characterisation of interstrip parameters on silicon sensors for the Belle II vertex detector
/ Paul DOLEJSCHI ; Manfred KRAMMER
[BELLE2-MTHESIS-2022-001]
Presented on 01 08 2012 Diploma
2012
HEPHY
/ Vienna
The BELLE II experiment at the SuperKEKB-Factory is designed to investigate CP violation in the quark sector. [...]
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159.
| Employing Deep Learning to Find Slow Pions in the Pixel Detector in the Belle II Experiment
/ Johannes Bilk ; Jens Sören Lange
[BELLE2-MTHESIS-2021-081]
Presented on 25 11 2021 MSc
2021
II. Institute of Physics
/ Giessen
Slow pions (pT<230 MeV/c) are detected and classified based exclisively upon their cluster shape in the PXD, using a neural network (NN) performing image processing [...]
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160.
| Firmware Implementations for the Upgrade of the Data Acquisition System of the Belle II Pixel Detector
/ Matthäus Krein ; Simon Reiter ; Thomas Geßler ; Jens Sören Lange
[BELLE2-MTHESIS-2021-080]
Presented on 20 12 2021 MSc
2021
II. Institute of Physics
/ Giessen
Parts of the ONSEN system firmware ("merger carrier" firmware), integrated in the present PXD readout, have been upgraded to a new FPGA platform, namely Kintex UltraScale 060 [...]
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161.
| MC study to obtain reconstruction efficiencies to measure branching fraction of D+ -> K+ pi0 mode
/ Haeyun Hwang ; Doris Kim
[BELLE2-UTHESIS-2021-001]
Presented on 13 12 2021 BSc
2021
Soongsil University
/ Seoul
Measuring the branching fraction of the D meson rare decay is important for validating the theoretical calculations of the standard model. [...]
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162.
| An electromagnetic calorimeter cluster classifier as a beam background suppressant in B^0 → D^{∗+} l^− ν_l decays at the Belle II experiment.
/ Kyle Amirie ; Steven Robertson
[BELLE2-MTHESIS-2021-079]
Presented on 01 11 2020 MSc
2020
McGill University
/ Montreal
The presence of beam background-related photons in the extra energy distributions of events reconstructed using Belle II data can make it difficult to accurately identify en- ergy missing from the detector that can be attributable to neutrinos or other hypothe- sized weakly interacting particles. [...]
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163.
| The Belle II vertex detector alignment studies and prompt $\sin{2\phi_1} $ analysis
/ Jakub Kandra ; prof. RNDr. Zdenek Dolezal, Dr.
[BELLE2-PTHESIS-2021-019]
Presented on 26 11 2021 PhD
2021
Institute of Particle and Nuclear Physics
/ Prague
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 $\sin{2\phi_1}$ analysis using the first relevant data collected by the detector. [...]
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164.
| First application of CsI(Tl) pulse shape discrimination at an $e^+ e^-$ collider to improve particle identification at the Belle II experiment
/ Savino Longo ; John Michael Roney
[BELLE2-PTHESIS-2021-018]
Presented on 07 10 2019 PhD
2019
University of Victoria
/ Victoria
This dissertation investigates CsI(Tl) pulse shape discrimination (PSD) as a novel experimental technique to improve challenging areas of particle identification at high energy $e^+ e^-$ colliders using CsI(Tl) calorimeters. [...]
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