PhD Theses

PhD Theses 85 records found  beginprevious36 - 45nextend  jump to record: Search took 0.00 seconds. 
36. Measurement of Lepton Mass Squared Moments of B&#8594;X<sub>c</sub>l&#957; Decays with the Belle II Experiment and Determination of the CKM Matrix Element |V<sub>cb</sub>| / Maximilian Welsch [BELLE2-PTHESIS-2023-004] Presented on 23 12 2022 PhD
2022
Physikalisches Institut / Bonn
This thesis presents measurements of the first to fourth moments of the lepton mass squared q<sup>2</sup>=(p<sub>l</sub> + p<sub>&#957;</sub>)<sup>2</sup> distribution of B&#8594;X<sub>c</sub>l&#957; decays for l=e,&#956; and with X<sub>c</sub> denoting a hadronic system containing a charm quark [...]
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37. Search for muonic dark force and performance studies of lepton identification at Belle II / Rajesh Kumar Maiti ; Gianluca Inguglia [BELLE2-PTHESIS-2023-003] Presented on 20 01 2023 PhD
2023
Institut of High Energy Physics / Vienna
This thesis presents an advanced search strategy to find a new dark gauge boson 𝑍′ and performance studies of particle identification to assist the new physics searches, especially involving flavor-changing charge and neutral currents in semi- leptonic 𝐵 decays. [...]
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38. Measurement of the time dependent CP Asymmetry of $B \to K^* \gamma$ decays in the Belle II experiment / Tristan Fillinger ; Jérôme Baudot [BELLE2-PTHESIS-2023-002] Presented on 30 09 2022 PhD
2022
Université de Strasbourg / Strasbourg
The Standard Model of particle physics, which describes the fundamental particles and their interactions, is the most successful theory in the history of science. [...]
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39. Search for τ → ℓϕ lepton flavour violating decays and fake tracks rate measurement with e+ e− → τ+ τ− events at the Belle II experiment / Léonard Polat ; Justine Serrano [BELLE2-PTHESIS-2023-001] Presented on 14 12 2022 PhD
2022
CPPM / Marseille
We report the search of lepton flavour violating τ → ℓϕ decays at the Belle II experiment, based on an integrated luminosity ∫ Ldt = 189.88 fb^(−1) of data collected from 2019 to 2021, at the Υ(4S) meson resonance energy s = √10.58 GeV. [...]
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40. Searches for the rare 𝑩+ −> 𝑲+ v v̄ and 𝑩𝟎 −> 𝑲∗𝟎 v v̄ decays using an inclusive tagging method at the Belle II experiment / Filippo Dattola ; Alexander Glazov ; Kerstin Tackmann [doi:10.3204/PUBDB-2022-06373] [BELLE2-PTHESIS-2022-011] Presented on 26 09 2022 PhD
2022
DESY / Hamburg
This thesis presents two searches for the rare B → K(∗)νν ̄ decays at the Belle II experiment, operating at the SuperKEKB asymmetric-energy electron-positron collider, at the KEK laboratories in Tsukuba, Japan. [...]
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41. Search for B→Kνν decays with a machine learning method at the Belle II experiment / Cyrille Praz ; Alexander Glazov [BELLE2-PTHESIS-2022-010] Presented on 23 08 2022 PhD
2022
DESY / Hamburg (Germany)
This thesis documents a search for the rare decay of a B meson into a K meson and a pair of neutrinos at the Belle II experiment, which is located along the SuperKEKB energy-asymmetric electron-positron collider. [...]
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42. Data Handling Processor and Signal Transmission in the Belle II DEPFET Pixel Detector / Leonard Germic ; Norbert Wermes [BELLE2-PTHESIS-2022-009] Presented on 12 07 2018 PhD
2018
University of Bonn / Bonn
The high precision measurements at the B factories have generated a new insight of the Standard Model with respect to CP violation and delivered higher constraints on the Standard Model parameters, i.e. [...]
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43. Development of Pixel Modules for the Belle II Detector / Florian Lütticke ; Norbert Wermes [BELLE2-PTHESIS-2022-008] Presented on 01 02 2018 PhD
2018
University of Bonn / Bonn
The future Belle II experiment at the SuperKEKB accelerator will improve the current understanding of flavor physics by increasing the recorded data set fiftyfold; allowing high precision measurements of CKM parameters and measurements of rare decays. [...]
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44. Search for the visible ττ decay of a Z′ dark boson in µµττ final state with Belle II / Luigi Corona ; Francesco Forti ; Katsuro Nakamura [BELLE2-PTHESIS-2022-007] Presented on 18 07 2022 PhD
2022
University of Pisa / Pisa
In this thesis we investigate the possibility of detecting these new particles in the mass range 3.6-10 GeV/c2 through their decays in a τ+τ− pair in e+e− → µ+µ−τ+τ− events. [...]
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45. Measurement of time-dependent CP asymmetry in B0 → KS0KS0KS0 decays at the Belle II experiment / Hikaru Tanigawa ; Yutaka Ushiroda [BELLE2-PTHESIS-2022-006] Presented on 21 07 2022 PhD
2022
University of Tokyo / Tokyo
B0 → KS0 KS0 KS0 decay is mediated by b → sqq penguin transition within the Standard Model. [...]
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