|
31.
| 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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32.
| 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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33.
| 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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34.
| 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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35.
| 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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36.
| 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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37.
| Optimization of the PID algorithms at the Belle II Experiment
/ Ali Bavarchee ; Alessandro Gaz
[BELLE2-MTHESIS-2023-038]
Presented on 05 06 2023 MSc
2023
University of Padova
/ Padova
Particle identification in the Belle II experiment involves utilizing information from various sub-detectors to classify six different species of charged particles: electrons, muons, charged pions, charged kaons, protons, and deuterons. [...]
Fulltext: PDF; |
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38.
| Search for B+ --> K+ tau tau with Belle and Belle II experiments
/ Vidya Sagar VOBBILISETTI ; Karim TRABELSI
[BELLE2-PTHESIS-2023-016]
Presented on 03 10 2023 PhD
2023
Université paris saclay
/ Orsay
In recent years, some deviations from the Standard Model (SM) have been observed in semileptonic B-meson decays, such as departures from lepton flavour universality in the b --> sll and b --> c tau nu transitions quantified by the R(K(*)) and R(D(*)) ratios. [...]
Fulltext: PDF; |
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39.
| Study of Sudden Beam Losses of SuperKEKB and Development of 3D Track Hardware Trigger using Machine Learning at Belle II
/ Yuxin Liu ; Akimasa Ishikawa ; Taichiro Koga
[BELLE2-MTHESIS-2023-037]
Presented on 25 07 2023 MSc
2023
SOKENDAI
/ Tsukuba
The Belle II Experiment, located at the SuperKEKB asymmetric electron-positron collider in Japan, is at the next generation of B-factories, aiming to explore new physics (NP) in the flavor sector and enhance the precision of Standard Model (SM) measurements. [...]
Fulltext: PDF; |
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40.
| Ecient Physics Signal Selectors for the First Trigger Level of the Belle II Experiment based on Machine Learning
/ Sebastian Skambraks ; Christian Kiesling
[BELLE2-PTHESIS-2023-015]
Presented on 22 11 2021 PhD
2021
Ludwig-Maximilians-University
/ Munich
A neural network based z-vertex trigger is developed for the first level trigger of the upgraded flavor physics experiment Belle II at the high luminosity B factory SuperKEKB in Tsukuba, Japan. [...]
Fulltext: PDF; |
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