|
21.
| Improved Particle Identification with the Belle II Calorimeter Using Machine Learning
/ Abtin Narimani Charan ; Torben Ferber
[BELLE2-PTHESIS-2024-002]
Presented on 09 02 2024 PhD
2024
Deutsches Elektronen-Synchrotron DESY
/ Hamburg
This dissertation revolves around the utilization of Convolutional Neural Networks (CNNs) to advance Particle Identification (PID) within the Belle II Electromagnetic Calorimeter (ECL). [...]
Fulltext:  PDF; |
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22.
| Slow Pion Identification using the Pixel Detector of Belle II
/ Mariangela Varela ; Prof. Dr. Christian Kiesling
[BELLE2-MTHESIS-2024-001]
Presented on 07 09 2023 MSc
2023
Max-Planck-Intitute for Physics
/ Munich, Germany
Charged pions coming from D∗ decays are very useful to tag the flavor of neutral B mesons. [...]
Fulltext: PDF; |
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23.
| Search for $\tau^-\to\mu^-\mu^+\mu^-$ lepton flavour violating decays and measurement of the SVD cluster position resolution at Belle II experiment
/ Robin Leboucher ; Justine Serrano
[BELLE2-PTHESIS-2024-001]
Presented on 31 10 2023 PhD
2023
CPPM
/ Marseille
Keywords: Particle physics; Search for New Physics; Lepton Flavour Violation; Tau lepton decays; Spatial resolution; Vertex detector Lepton flavour violating decays are considered one of the most effective ways to search for physics beyond the standard model, as they are not allowed in the Standard Model of particle physics. [...]
Fulltext: PDF (additional files); |
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24.
| Study of charge asymmetries in pion and kaon identification with the Belle II detector
/ Cecilia Antonioli ; Alessandro Gaz
[BELLE2-MTHESIS-2023-041]
Presented on 22 09 2023 MSc
2023
University of Padova
/ Padova
In this work, we study the performance of the charged kaon and pion identification at the Belle II experiment. [...]
Fulltext: PDF; |
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25.
| Search for the B+ to K+ nu anti-nu decay in the Belle II experiment
/ Lucas Martel ; Isabelle Ripp-Baudot ; Giulio Dujany
[BELLE2-PTHESIS-2023-019]
Presented on 20 09 2023 PhD
2023
IPHC
/ Strasbourg, France
This thesis describes the first search for the decay of a charged B meson into a charged kaon and a pair of neutrinos using a hadronic tagging method at the Belle II experiment, operating at the asymmetric electron-positron collider SuperKEKB located at KEK, Tsukuba, Japan. [...]
Fulltext: PDF; |
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26.
| Suppression of Continuum Background with Neural Networks for Belle II
/ Urbschat, Bela ; Caldwell, Allen ; Moser, Hans-Günther
[BELLE2-UTHESIS-2023-002]
Presented on 12 12 2023 BSc
2023
Max Planck Institute for Physics
/ Munich
At Belle II, a so called B factory, pairs of B mesons are produced in large numbers to study their subsequent decays. [...]
defense slides: PDF; thesis: PDF; |
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27.
| Search for the Lepton Flavor Violating B+ → K+ τ (e, μ) decays with the Belle and Belle II detectors
/ Gaetano de Marino ; Karim Trabelsi
[BELLE2-PTHESIS-2023-018]
Presented on 09 12 2022 PhD
2022
Université Paris-Saclay
/ Orsay
For over a decade, many deviations from the Standard Model have been observed in semileptonic B-meson decays, for example, the departure from the lepton flavor universality in b → sll and b → c τ ν transitions. [...]
Fulltext: PDF; |
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28.
| A universal approach for particle identification at Belle II using neural networks
/ Xavier Simó ; Stefan Wallner ; Stephan Paul
[BELLE2-MTHESIS-2023-040]
Presented on 30 11 2023 MSc
2023
Technische Universität München
/ Munich
The Belle II experiment aims to study the standard model (SM) of particle physics and to search for new physics (NP) beyond the standard model with unprecedented precision. [...]
Fulltext: PDF; |
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29.
| Signal proxy and radiative Bhabha background studies: contributions to the search for invisibly decaying dark photons at Belle II
/ Daniel Weston Mckay Crook ; Christopher Hearty
[BELLE2-MTHESIS-2023-039]
Presented on 30 08 2023 MSc
2023
University of British Columbia
/ Vancouver
The nature of dark matter is one of the greatest extant mysteries in physics [...]
Fulltext: PDF; |
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30.
| Measurement of the properties of B+ → ρ+ρ0 decays at Belle II
/ Riccardo Manfredi ; Diego Tonelli
[BELLE2-PTHESIS-2023-017]
Presented on 09 10 2023 PhD
2023
Università di Trieste
/ Trieste
This experimental particle-physics thesis reports measurements of properties of B+ → ρ+ρ0 decays for the determination of the quark-mixing matrix angle α = arg(−(VtdV ∗)/(VudV ∗ )), a fundamental parameter of quark dynamics. [...]
Fulltext: PDF; |
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