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1.
| Tests of lepton universality in the rates of inclusive semileptonic B-meson decays at Belle II
/ Henrik Junkerkalefeld ; Jochen Dingfelder ; Peter Lewis ; Florian Bernlochner
[BELLE2-PTHESIS-2024-017]
Presented on 28 06 2024 PhD
2024
Physikalisches Institut
/ Bonn
This thesis presents two precision tests of lepton universality: the first measurement of the ratio of light-lepton branching fractions of inclusive semileptonic $B$-meson decays, $R(X_{e/mu}) = \mathcal{B}(B \to Xe\nu) / \mathcal{B}(B \to X\mu\nu)$, and the first successful measurement of inclusive $B \to X\tau\nu$ decays, measured in a ratio relative to $B \to X\ell\nu$ decays ($\ell = e, \mu$), $R(X_{\tau/\ell}) = \mathcal{B}(B \to X\tau\nu) / \mathcal{B}(B \to X\ell\nu)$. [...]
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2.
| Measurement of the full set of kinematic moments of semileptonic π΅-meson decays with the Run 1 data set of Belle II
/ Munira Khan ; Florian Bernlochner ; Jochen Dingfelder ; Markus Prim
[BELLE2-TALK-CONF-2024-021]
28 February 2024
/ DPG-FrΓΌhjahrstagung 2024
The determination of the Cabibbo-Kobayashi-Maskawa matrix element |πππ| relies on π β πβπβ transitions. [...]
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3.
| Direct measurement of π
+-0 at Belle II
/ Florian Bernlochner, ; Jochen Dingfelder, ; Anna-Maria Heyn, ; Markus Prim, ; et al
[BELLE2-TALK-CONF-2024-016]
26 February 2024
/ DPG 2024
The ratio of the Ο(4π) β π΅+π΅β and Ο(4π) β π΅0 Β―π΅0 decay rates, π
Β±0, represents a crucial input quantity to convert measured yields into branching fractions at π+πβ π΅-factory experiments. [...]
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4.
| Optimization of long-lived neutral kaon detection and rejection at the Belle II experiment
/ Lucas StΓΆtzer ; Prof. Dr. Jochen Dingfelder ; Dr. Peter Lewis
[BELLE2-MTHESIS-2022-041]
Presented on 21 11 2022 MSc
2022
Physikalisches Institut
/ Bonn
We investigate an optimization of the reconstruction of neutral long living Kaons ($K_L^0$) at the Belle II experiment. [...]
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5.
| Development of a Graph Neural Network based Tagging Approach for Semi-Inclusive Tagging and Rest of Event Clean Up for the Belle II Experiment
/ Prof. Dr. Florian Bernlochner ; Prof. Dr. Jochen Dingfelder
[BELLE2-MTHESIS-2022-039]
Presented on 31 03 2022 MSc
2022
University of Bonn
/ Bonn
This thesis focuses on the development of software tools which shall improve the particle reconstruction at Belle II. [...]
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6.
| Determination of $|V_{ub}|$ from untagged $B^0\to\pi^- \ell^+ \nu_{\ell}$ decays using 2019-2021 Belle~II data
/ Svenja Granderath ; Florian Bernlochner ; Jochen Dingfelder ; Peter Lewis
[BELLE2-CONF-PH-2022-017]
09 October 2022
We present an analysis of the charmless semileptonic decay $B^0\to\pi^- \ell^+ \nu_{\ell}$, where $\ell = e, \mu$, from 198.0 million pairs of $B\bar{B}$ mesons recorded by the Belle~II detector at the SuperKEKB electron-positron collider. [...]
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7.
| Status and prospects for flavour anomalies at Belle II
/ Jochen Dingfelder
[BELLE2-TALK-DRAFT-2022-138]
[BELLE2-TALK-CONF-2022-120]
05 September 2022
/ Interplay between Particle and Astrophysics
Flavor Anomalies at Belle II - Status and Prospects
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8.
| Irradiation Burst Studies on Belle II PXD Module Components
/ Jannes Schmitz ; Prof.Dr.Jochen Dingfelder
[BELLE2-MTHESIS-2022-037]
Presented on 17 12 2020 MSc
2020
Physikalisches Institut
/ Bonn
The Belle II detector started recording collision data in spring 2019. [...]
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9.
| Development of a FE-I4-based module for radiation monitoring with BEAST II during the commissioning phase of the Belle II detector
/ Patrick Ahlburg ; Prof. Dr. Jochen Dingfelder
[BELLE2-MTHESIS-2022-036]
Presented on 17 11 2016 MSc
2016
Physikalisches Institut
/ Bonn
Since 2010, the accelerator has been upgraded with the goal of an instantaneous luminosity 40 times higher compared to KEKB. [...]
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10.
| Investigation of gated mode operation of the Belle II pixel detector
/ Cedric HΓΆnig ; Jochen Dingfelder
[BELLE2-MTHESIS-2022-022]
Presented on 29 09 2016 MSc
2016
University of Bonn
/ Bonn
The improved superKEKB accelerator will use a continuous injection scheme. [...]
Fulltext: PDF; |
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