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Belle II Document Server
18
records found 1 - 10
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1.
WG2: Exclusive SL B-decays at Belle/Belle II
/
Christoph Schwanda
[BELLE2-TALK-DRAFT-2023-142]
[BELLE2-TALK-CONF-2023-142]
18 September 2023
/ 12th International Workshop on the CKM Unitarity Triangle
This talk reviews the Belle II B0 -> D*- l+ nu untagged (winter 2023), the Belle B -> D*lnu tagged [Phys.Rev.D 108 (2023) 1, 012002 and update at EPS-HEP 2023] and the Belle B -> D**lnu results [Phys.Rev.D 107 (2023) 9, 092003]..
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2.
Semileptonic decays and tests of lepton flavour universality at Belle II
/
Christoph Schwanda
[BELLE2-TALK-DRAFT-2023-125]
[BELLE2-TALK-CONF-2023-127]
20'
30 August 2023
/ 21st Lomonosov Conference on Elementary Particle Physics⨠(August 24-30, 2023)
This presentation reviews the first measurement of R(X) at the Y(4S), the first measurement of R(D*) at Belle II, the tests of light-lepton universality in angular asymmetries of B -> D*lnu, and the test of light-lepton universality in inclusive semileptonic B meson decays. [...]
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3.
Determination of the Cabibbo-Koyabashi-Maskawa matrix elements |Vcb| and |Vub| at Belle and Belle II
/
Christoph Schwanda
[BELLE2-TALK-CONF-2023-057]
22 May 2023
/ International Conference on Precision Physics and Fundamental Physical Constants
A precise knowledge of the elements |πππ| and |ππ’π| of the CKM matrix is important to constraint the Standard Model of particle physics and predict the rate of ultra-rare π΅ meson decays such as π΅βππ or π΅βπΎππΒ―. [...]
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4.
Experimental flavor physics overview
/
Christoph Schwanda
[BELLE2-TALK-DRAFT-2023-047]
[BELLE2-TALK-CONF-2023-050]
11 April 2023
/ Potoroz 2023
Summary of the search for heavy flavour physics anomalies at the B factories, Belle II and LHCb..
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5.
Semileptonic B decays at Belle II
/
Christoph Schwanda
[BELLE2-TALK-DRAFT-2023-026]
[BELLE2-TALK-CONF-2023-042]
18 March 2023
/ Rencontres de Moriond - Electroweak Interactions & Unified Theories
This talk covers recent results from Belle II on exclusive semileptonic B decays and determinations of the Cabibbo-Kobayashi-Maskawa matrix elements |Vcb| and |Vub| based on these measurements..
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6.
Contribution of Belle/Belle II to the CKM unitarity
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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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7.
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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8.
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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9.
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 fΓΌr 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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10.
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 Ξ₯(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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