Belle II Document Server 13 records found  1 - 10next  jump to record: Search took 0.03 seconds. 
1. Contribution of Belle/Belle II to the CKM unitarity / Christoph Schwanda [BELLE2-TALK-DRAFT-2022-174] [BELLE2-TALK-CONF-2022-134]
24 November 2022
/ 16th Central European Seminar on Particle Physics and Quantum Field Theory
This talk reviews updated constraints to the CKM unitarity triangle, in particular new measurements of |Vcb| and |Vub| and of phi3/gamma..
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2. Determination of $|V_{cb}|$ from $B\to D\ell\nu$ decays using 2019--2021 Belle II data / Philipp Horak ; Christoph Schwanda [BELLE2-CONF-PH-2022-010]
19 October 2022

We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $V_{cb}$ using the decay $B\to D\ell\nu$ based on $e^+e^-\to\Upsilon(4S)$~data recorded by the Belle II detector and corresponding to \lumi of integrated luminosity. [...]
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3. Recent Belle II results related to anomalies in semileptonic and hadronic B decay / Christoph Schwanda [BELLE2-TALK-DRAFT-2022-093] [BELLE2-TALK-CONF-2022-073]
14 July 2022
/ Quirks in quark flavour physics
The rate of semitauonic B decays has been consistently above theory expectations since these decays were first measured. [...]
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4. Search for dark sector physics and performance of the Belle II detector in final state events with muons and large missing energy / Michel Bertemes ; Gianluca Inguglia ; Christoph Schwanda [BELLE2-PTHESIS-2022-001] Presented on 20 10 2021 PhD
2021
Institut für Hochenergiephysik (HEPHY) / Vienna
This thesis presents two different searches for dark sector mediators in final state events consisting of a pair of muons and large missing energy. [...]
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5. Measurement of the inclusive semileptonic B meson branching fraction in 62.8/fb of Belle II data / Manca Mrvar ; Christoph Schwanda [BELLE2-CONF-PH-2021-012]
17 November 2021

We report a measurement of the branching fraction of inclusive semileptonic B meson decays B -> Xc l nu in Υ(4S) -> BBbar data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e+e- collider and corresponding to 62.8/fb of integrated luminosity. [...]
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6. Measurement of the $B^-\to D^0 \ell^- \bar\nu_\ell$ Branching Fraction in 62.8~fb$^{-1}$ of Belle II data / Philipp Horak ; Christoph Schwanda [BELLE2-CONF-PH-2021-011]
07 October 2021

We report a measurement of the branching fraction of the semileptonic decay \bdlnu (and its charge conjugate) using \mbox{$62.8~\text{fb}^{-1}$} of $\Upsilon(4S)\to B\bar B$~data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. [...]
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7. Beauty physics from Belle II / Christoph Schwanda [BELLE2-TALK-DRAFT-2021-058] [BELLE2-TALK-CONF-2021-031]
24 May 2021
/ PHENO 2021
Beauty physics from Belle II
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8. Search for an invisibly decaying Z' boson and study of particle identification at the Belle II experiment / Paul Feichtinger ; Gianluca Inguglia ; Christoph Schwanda [BELLE2-MTHESIS-2021-003] Presented on 16 03 2021 MSc
2021
Atominstitut (ATI); Institut für Hochenergiephysik (HEPHY) / Vienna
The subject of this thesis is the search for a hypothetical Z' vector boson in events with two muons plus missing energy in the final state (e+e− → μ+μ− (Z' → invisible)) at the Belle II detector, located at the SuperKEKB accelerator in Tsukuba, Japan. [...]
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9. Identification of muonic decays of tau pairs at the Belle II experiment through the implementation of machine learning algorithms / Lukas Linauer ; Gianluca Inguglia ; Christoph Schwanda [BELLE2-MTHESIS-2021-002] Presented on 13 01 2021 MSc
2021
HEPHY / Wien
The Belle II experiment, installed at the electron-positron collider SuperKEKB in Tsukuba, Japan, plans to collect around 50 ab −1 of data over the course of its lifetime; around 50 times more than its predecessor Belle. [...]
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10. Studies of the semileptonic $\bar B^0\to D^{*+}\ell^-\bar\nu_\ell$ and $B^-\to D^{0}\ell^-\bar\nu_\ell$ decay processes with \mbox{34.6 fb$^{-1}$} of Belle II data / Florian Bernlochner ; Lu Cao ; Daniel Dorner ; Philipp Horak ; et al [BELLE2-CONF-PH-2020-008]
05 August 2020

We report measurements of the $\bar B^0\to D^{*+}\ell^-\bar\nu_\ell$ and $B^-\to D^{0}\ell^-\bar\nu_\ell$ processes using \mbox{34.6 fb$^{-1}$} of collision events recorded by the Belle~II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider [...]
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