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1.	$B \rightarrow D^{} \ell \nu $ Analysis at Belle II** / Eylül Ünlü [BELLE2-TALK-CONF-2024-019] 12 minutes (plus 3 minutes for questions) 27 February 2024 / DPG There is currently some tension between the measured value of $R(D^{})=\mathcal{B}(B \rightarrow D^{} \tau \nu_{\tau})/ \mathcal{B}(B \rightarrow D^{} \ell \nu_{\ell})$ and the Standard Model prediction, hinting at lepton universality violation. [...] Fulltext:* PDF; Detailed record - Similar records
2.	*A test of lepton flavor universality with a measurement of $R(D^{})$ using hadronic $B$ tagging at the Belle~II experiment** / The Belle II Collaboration [BELLE2-NOTE-PH-2022-032] [BELLE2-PUB-DRAFT-2023-015] [BELLE2-PUB-PH-2024-001] 05 January 2024 The ratio of branching fractions $R(D^{}) = \mathcal{B}(\overline{B} \rightarrow D^{} \tau^{-} \overline{\nu}_{\tau})$/$\mathcal{B} (\overline{B} \rightarrow D^{} \ell^{-} \overline{\nu}_{\ell})$, where $\ell$ is an electron or muon, is measured using a Belle~II data sample with an integrated luminosity of $189~\mathrm{fb}^{-1}$ at the SuperKEKB asymmetric-energy $e^{+} e^{-}$ collider. [...] arXiv:2401.02840:* PDF (additional files); Detailed record - Similar records
3.	Recent Belle II results on semileptonic B decays and tests of lepton-flavor universality / Kazuki Kojima [BELLE2-TALK-DRAFT-2023-099] [BELLE2-TALK-CONF-2023-097] 15 minutes (12 minutes presentation + 3 minutes Q&A) https://www.leptonphoton2023.org/ 18 July 2023 / Lepton Photon 2023 Semileptonic $B$-meson decays allow for determining the magnitudes of the CKM matrix parameters $\|V_{cb}\|$ and $\|V_{ub}\|$, two fundamental parameters of the SM flavor sector and to probe the excess rate of semitauonic $B$ decays, which has been consistently above expectations in recent years. [...] Fulltext: PDF; Detailed record - Similar records
4.	Belle~II results related to $b \to c$ anomalies / Kazuki Kojima [BELLE2-TALK-CONF-2023-025] [BELLE2-CONF-PROC-2023-029] Contribution to the 2023 Electroweak session of the 57th Rencontres de Moriond 17 July 2023 We report two new measurements for tests of lepton flavor universality between electrons and muons using semileptonic $B$ decays with a data set of $189~\mathrm{fb}^{-1}$ collected at the Belle II experiment between 2019 and 2021. [...] Fulltext: PDF; Detailed record - Similar records
5.	Belle~II results related to $b \to c$ anomalies / Kazuki Kojima [BELLE2-TALK-CONF-2023-025] [BELLE2-TALK-DRAFT-2023-027] [BELLE2-PUB-DRAFT-2022-012] [BELLE2-PUB-DRAFT-2023-007] [BELLE2-CONF-DRAFT-2023-017] Page limit: 4 pages https://moriond.in2p3.fr/2023/EW/Contributions.html 10 July 2023 We report two novel measurements for tests of lepton flavor universality between electrons and muons using semileptonic $B$ decays with a data set of $189~\mathrm{fb}^{-1}$ collected at the Belle II experiment between 2019 and 2021. [...] Version1: PDF; Version2: PDF; Version3: PDF; Detailed record - Similar records
6.	Recent Belle II results related to flavor anomalies / Kazuki Kojima [BELLE2-NOTE-PH-2021-042] [BELLE2-NOTE-PH-2022-031] [BELLE2-TALK-DRAFT-2023-028] [BELLE2-TALK-CONF-2023-027] 15 minutes (13 minutes presentation + 2 minutes Q&A) https://indico.in2p3.fr/event/28466/ 29 March 2023 / International Conference on the Physics of the Two Infinities Persistent anomalies reported by various experiments in $b \rightarrow c$ and $b \rightarrow s\ell\ell$ transitions hint at possible violation of lepton-flavor universality. [...] Fulltext: PDF; Detailed record - Similar records
7.	Belle II results related to b→c anomalies / Kazuki Kojima [BELLE2-NOTE-PH-2021-042] [BELLE2-NOTE-PH-2022-031 ] [BELLE2-TALK-DRAFT-2023-027] [BELLE2-TALK-CONF-2023-025] 7 minutes (5 minutes presentation + 2 minutes Q&A) https://moriond.in2p3.fr/2023/EW/ 20 March 2023 / 57th Rencontres de Moriond 2023: Electroweak Interactions & Unified Theories Recent Belle II results of light-lepton flavor universality tests for b→c anomalies using semileptonic B decays are shown. [...] Fulltext: PDF; Detailed record - Similar records
8.	*$R(D^{})$ measurement using the hadronic tag algorithm with $189~\mathrm{fb}^{-1}$ data at the Belle~II experiment** / Kazuki Kojima ; Toru Iijima ; Qi-Dong Zhou ; Kodai Matsuoka ; et al [BELLE2-NOTE-PH-2022-032] [BELLE2-TALK-DRAFT-2023-035] [BELLE2-TALK-CONF-2023-024] 20 minutes (15 minutes presentation + 5 minutes Q&A); https://www.jps.or.jp/activities/meetings/past.php; https://kds.kek.jp/event/45609/ 22 March 2023 / The 2023 Spring Meeting of the Physical Society of Japan In the semileptonic decay of 𝐵 mesons, the global average of $R(D^{})$ measurement deviates from the Standard Model by more than $3\sigma$. [...] Slide in Japanese:* PDF; Detailed record - Similar records
9.	Study of Exclusive $B \to \pi e^+ \nu_e$ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb$^{-1}$ of Belle II Data / Nadia Toutounji ; Moritz Bauer ; Pablo Goldenzweig ; Kevin Varvell [BELLE2-CONF-PH-2022-008] 16 June 2022 We present a reconstruction of the semileptonic decays $B^0 \to \pi^- e^+ \nu_e$ and $B^+ \to \pi^0 e^+ \nu_e$ in a sample corresponding to 189.3 fb$^{-1}$ of Belle II data, using events where the partner $B$-meson is reconstructed from a large variety of hadronic channels via a tagging algorithm known as the full-event-interpretation. [...] Fulltext: PDF; Detailed record - Similar records
10.	*$R(D^{})$ measurement using the hadronic tag algorithm at the Belle II experiment** / Kazuki Kojima ; Toru Iijima ; Qi-Dong Zhou ; Kodai Matsuoka ; et al [BELLE2-NOTE-PH-2022-032] [BELLE2-TALK-DRAFT-2022-137] [BELLE2-TALK-CONF-2022-111] 20 minutes (15 minutes presentation + 5 minutes Q&A) ; https://www.jps.or.jp/english/meetings-and-awards/autumn/autumn-meeting-index.html ; https://kds.kek.jp/event/43097/ 06 September 2022 / The 2022 Autumn Meeting of the Physical Society of Japan In the semileptonic decay of $B$ mesons, the global average of $R(D^{})$ measurement deviates from the Standard Model by $3.3\sigma$. [...] Belle II Note:* PDF; Slide in Japanese: PDF; Detailed record - Similar records

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