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The Theses collection contains undergraduate (U), masters (M) and PhD (P) student theses. To search for a thesis type select the appropriate item under "focus on".
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2021-09-02
13:30		 Tagged Analysis of $B^0\to\pi^-\ell^+\nu_\ell$ at Belle / Jonathan Wolfgang Grumke ; Jochen Dingfelder ; Peter Lewis [BELLE2-MTHESIS-2021-075] Presented on 25 08 2021 MSc
2021 Physikalisches Institut / Bonn
Using the FEI algorithm with simulated data for hadronic tagging in the reconstruction of $B^0\to\pi^-\ell^+\nu_\ell$ results in a signal yield of $626\pm 39$ when applying the same selections as Sibidanov et al., who used the FR algorithm and obtained a signal yield of $463\pm 28$. [...]
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2021-09-02
13:19		 Investigation of B → µ ν_µ with Inclusive Tagging at Belle II / Daniel Jacobi ; Prof. Dr. Jochen Dingfelder ; Dr. Peter Lewis ; Svenja Katharina Granderath [BELLE2-MTHESIS-2021-074] Presented on 25 08 2021 MSc
2021 Physikalisches Institut / Bonn
In this thesis the rare $B \to \mu \nu_{\mu}$ decay was investigated using the inclusive tagging approach. [...]
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2021-09-02
07:05		 First Conceptual Design and Studies for a Tracking Time Projection Chamber for the Belle II Experiment / Andreas Löschcke Centeno ; Jochen Dingfelder ; Peter Lewis [BELLE2-MTHESIS-2021-073] Presented on 30 08 2021 MSc
2021 Physikalisches Institut / Bonn
This thesis deals with simulating a tracking time projection chamber (TPC) for the \Btwo experiment at the SuperKEKB accelerator and using the simulation for first studies. [...]
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2021-08-20
16:01		 Searches for an invisible Z' and for the dark Higgsstrahlung A'h' process in μ⁺μ⁻ plus missing energy final states at Belle II / Marcello Campajola ; Guglielmo De Nardo ; Francesco Di Capua [BELLE2-PTHESIS-2021-016] Presented on 24 06 2021 PhD
2021 Università di Napoli "Federico II" / Napoli (IT)
The work presented in this thesis concerns two searches for dark sector mediators in \emep\ annihilations at the center-of-mass energy of 10.58~GeV with the Belle II experiment [...]
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2021-08-09
11:48		 Real-Time Trigger and online Data Reduction based on Machine Learning Methods for Particle Detector Technology / Steffen Baehr ; Juergen Becker [BELLE2-PTHESIS-2021-015] Presented on 16 07 2020 PhD
2020 KIT / Karlsruhe
Modern particle accelerator experiments are producing immense amounts of data online during their operation. [...]
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2021-07-20
13:12		 Neural Network based Pulse Shape Analysis with the Belle II Electromagnetic Calorimeter / Stella Katharina Wermuth ; Dr. Torben Ferber ; Prof. Dr. Oliver Gerberding [BELLE2-MTHESIS-2021-072] Presented on 22 06 2021 MSc
2021 DESY / Hamburg
The Belle II experiment, located at the SuperKEKB e+e- collider in Japan, uses pulse shape analysis techniques to distinguish electromagnetically and hadronically interacting particles within the CsI(Tl) electromagnetic calorimeter. [...]
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2021-07-19
11:21		 Search for lepton flavour violating B meson decays at the Belle experiment / Mateusz Kaleta ; Andrzej Bożek [BELLE2-MTHESIS-2021-071] Presented on 26 01 2021 MSc
2021 - / -
The work of the thesis is concerned about searching for Lepton Flavour Violating B meson decays, B+ →K+τ±μ∓, in the experimental environment of the Belle experiment. [...]
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2021-07-13
16:08		 Study of 𝐵 → 𝜋^−ℓ^+𝜈_ℓ Decays Using Fully Reconstructed ϒ(4𝑆) → 𝐵 \bar 𝐵 Events at the Belle II Experiment / Yaroslav Kulii ; Thomas Kuhr [BELLE2-MTHESIS-2021-070] Presented on 15 09 2020 MSc
2020 Ludwig Maximilian University / Munich
We present the results of a study of exclusively reconstructed 𝐵 → 𝜋^−ℓ^+𝜈_ℓ decays, where ℓ is an electron or a muon. [...]
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2021-07-02
12:25		 Construction of Angular Observables Sensitive to New Physics in $\bar B\to D^*\tau^-\bar \nu_\tau$ Decays and Measurements of Differential Cross Sections of $\bar B\to D^*\ell^-\bar\nu_\ell$ Decays with Hadronic Tagging at Belle / Kilian Lieret ; Thomas Kuhr ; Martin Jung ; Gerhard Buchalla [BELLE2-MTHESIS-2021-069] Presented on 16 09 2018 MSc
2018 Ludwig Maximilian University of Munich / Munich
Recent measurements of $\bar B\to D^{(*)}\ell^-\bar\nu_\ell$ cross sections at Belle, BaBar, and LHCb challenge lepton universality and thus the Standard Model at a combined confidence level close to four standard deviations. [...]
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2021-07-02
03:02		 Sensitivity Study of $B^{+}\rightarrow \mu^{+}\nu$ in the Belle II Experiment / Yen-Ting Chin ; Pao-Ti Chang [BELLE2-MTHESIS-2021-068] Presented on 25 01 2021 MSc
2021 National Taiwan University / Taipei, Taiwan
In this study, we intend to estimate the statistical significance of $B^{+}\rightarrow \mu^{+}\nu$ when various amounts of Belle II data are available in the future, assuming that the Standard Model estimation of the branching fraction of $B^{+}\rightarrow \mu^{+}\nu$ is correct. [...]
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Last updated: 23 Sep 2021, 01:46