Belle II Document Server 56 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
1. 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: Download fulltextPDF (additional files);
2. The Silicon Vertex Detector of the Belle II Experiment / Suryanarayan Mondal ; Belle II SVD Collaboration [BELLE2-TALK-CONF-2023-150] 15' -> 12' for talk and 3' for discussion
25 September 2023
/ IPRD23 Siena
In June 2022 the data taking of the Belle II experiment was stopped for the Long Shutdown 1 (LS1), which is primarily required to install a new two-layer DEPFET detector (PXD) and upgrade components of the accelerator. [...]
Fulltext: Download fulltextPDF;
3. Recent BelleII results on BSM physics / Roberta Volpe on behalf of the Belle II Collaboration [BELLE2-CONF-PROC-2023-019] proceedings of DIS2023: XXX International Workshop on Deep-Inelastic Scattering and Related Subjects, Michigan State University, USA, 27-31 March 2023
08 July 2023

We report on recent results obtained by the Belle II experiment related to searches for beyond the standard model physics. [...]
after Belle2 rev: Download fulltextPDF; this is the first version draft: Download fulltextPDF;
4. $R(D^{*})$ 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: Download fulltextPDF;
5. The Silicon Vertex Detector of the Belle II Experiment / Kookhyun Kang ; on behalf of the Belle-II SVD Collaboration [BELLE2-CONF-PROC-2023-003] Proceedings of the 31st International Workshop on Vertex Detectors
13 January 2023

Belle II is an experiment taking data at an asymmetric energy e+e- collider, SuperKEKB, which is operated at the Υ(4S) resonance energy. [...]
6. Measurement of instrumental asymmetries of kaons and pions / The Belle II Collaboration [BELLE2-NOTE-PL-2022-004]
23 November 2022

We measure instrumental asymmetries of kaons and pions using $D^0 \to K^-\pi^+$ and $D^- \to K^0_S\pi^-$ decays. [...]
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7. $R(D^{*})$ 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: Download fulltextPDF; Slide in Japanese: Download fulltextPDF;
8. Simulation of an all-layer monolithic pixel vertex detector for the Belle II upgrade / Ludovico Massaccesi ; Suryanarayan Mondal ; Belle II VTX collaboration [BELLE2-POSTER-CONF-2022-002] Poster. https://agenda.infn.it/event/22092/contributions/166670/
22 May 2022
/ PM2021 Pisa Meeting on Advanced Detectors
The Belle II experiment at the SuperKEKB e+e- collider has started developing an upgrade program on the time frame of 2026-2027 to improve the detector performance and robustness against beam-induced backgrounds. [...]
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9. CMOS MAPS Upgrade for the Belle II Vertex Detector / Christian Wessel ; Belle II VTX collaboration [BELLE2-TALK-CONF-2022-044] 15 + 5 minutes https://agenda.infn.it/event/22092/ https://agenda.infn.it/event/22092/contributions/167366/
24 May 2022
/ Pisa Meeting on Adtanced Detectors
The success of the Belle II experiment in Japan relies on the very high instantaneous luminosity, close to 6x10^35 cm^-2 s^-1, expected from the SuperKEKB collider. [...]
Fulltext: Download fulltextPDF;
10. The Silicon Vertex Detector of the Belle II Experiment / Christian Irmler ; on behalf of the Belle II SVD collaboration [BELLE2-POSTER-CONF-2022-001]
16 May 2022
/ 15th Pisa Meeting on Advanced Detectors
The Belle II experiment is taking data at the asymmetric Super-KEKB collider, which operates at the Y(4S) resonance [...]
Fulltext: summary_irmler_belle2_svd - Download fulltextPDF; poster_irmler_belle2_svd_V2 - Download fulltextPDF; poster_irmler_belle2_svd_V2.1 - Download fulltextPDF; poster_irmler_belle2_svd_V4 - Download fulltextPDF; poster_irmler_belle2_svd_V3 - Download fulltextPDF;

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