Belle II Document Server 8 records found  Search took 0.02 seconds. 
1. Test of lepton flavor universality in inclusive semileptonic B decays at Belle II / Henrik Junkerkalefeld ; Peter Lewis ; Florian Bernlochner ; Jochen Dingfelder ; et al [BELLE2-CONF-PH-2022-004]
17 June 2022

We present the measurement of the ratio of branching fractions of inclusive semileptonic \B decays, $\RXemu=\BFXenu/\BFXmunu$, with a hadronic tagged analysis using \lumion of \belletwo data. [...]
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2. Optimisation of the Data Reduction for the Belle II Pixel Detector and Development of a new Track Finding Algorithm using the Belle II Vertex Detector / Christian Wessel ; Jochen Dingfelder ; Florian Bernlochner [BELLE2-PTHESIS-2022-005] Presented on 27 06 2022 PhD
Christian Wessel / Bonn
The Belle II experiment, located at the SuperKEKB collider in Tsukuba, Japan, is recording data at world record luminosities in order to provide world-leading results in the field of particle physics in the future. [...]
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3. 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
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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4. 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
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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5. 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
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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6. Measurement of the time-integrated mixing probability chi_d with a semileptonic double-tagging strategy and 34.6 fb^-1 of Belle II collision data / Florian Bernlochner ; Jochen Dingfelder ; Stephan Duell ; Peter Lewis [BELLE2-CONF-PH-2021-004]
06 April 2021

We present a first measurement of the time-integrated mixing probability chi_d using Belle II collision data corresponding to the integrated luminosity of 34.6 fb^-1. [...]
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7. Untagged Exclusive Analysis of the Semileptonic Decay B→πlν from Belle II Data in Preparation for |V_ub| Extraction / Svenja Granderath ; Prof. Dr. Jochen Dingfelder ; Dr. Peter Lewis [BELLE2-MTHESIS-2019-006] Presented on 19 09 2019 MSc
Physikalisches Institut / Bonn, Germany
In this thesis an untagged exclusive analysis of the charmless semileptonic decay B→πlν using an integrated luminosity of 5.6 fb−1 of early Belle II data was discussed [...]
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8. Exclusive untagged analysis of the semi-leptonic decay B→ρlν in preparation for extracting |V_ub| using early Belle II data / Lex Greeven ; Prof. Dr. Jochen Dingfelder ; Dr. Peter Lewis [BELLE2-MTHESIS-2019-004] Presented on 01 08 2019 MSc
Physikalisches Institut / Bonn
In this thesis, the decay B → ρlν was studied using Belle II Monte Carlo simulation corresponding to the early Belle II data size of 6.5 fb−1. [...]
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