Belle II Document Server 262 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
1. Electroweak penguins and radiative B decays at Belle II / Cyrille Praz [BELLE2-CONF-PROC-2023-015] Proceedings of "Rencontres de Moriond EW 2023"
15 May 2023

Decays of B mesons involving the transition of a b quark into an s quark are good probes of physics beyond the standard model. [...]
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2. Recent results from Belle II / Valerio Bertacchi [BELLE2-CONF-PROC-2023-008] Proceedings of QCD22 conference
02 September 2022

The Belle II experiment at the SuperKEKB energy-asymmetric e+e− collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. [...]
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3. Time-dependent, hadronic B decays and electroweak penguins at Belle II / Valerio Bertacchi [BELLE2-CONF-PROC-2023-007] Proceedings of "Rencontres de Moriond QCD 2023" conference
25 April 2023

We report the recent measurements performed using the data sample collected from 2019 to 2022 by the Belle II experiment 1 at Υ(4S) resonance, corresponding to an integrated luminosity of 362 fb−1 . [...]
4. Dark-sector physics at Belle II / Ezio Torassa [BELLE2-TALK-CONF-2023-029] 20 min + 5 min discussion
30 March 2023
/ Prospecting for New Physics through Flavor, Dark Matter, and Machine Learning
Review of the dark-sector physics at Belle II presented at the Aspen 2023 Winter Conference: "Prospecting for New Physics through Flavor, Dark Matter, and Machine Learning"
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5. 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)
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. [...]
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6. 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)
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. [...]
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7. $R(D^{*})$ 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);;
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 $3\sigma$. [...]
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8. Study of B+ → J/ψ K*+ (→KS pi+) decays / Natsuki Kuroda ; Kenkichi Miyabayashi [BELLE2-NOTE-PL-2023-002]
18 March 2023

We report a study for reconstruction of the decay chain of B0 → J/ψK∗+ followed by J/ψ → μ+μ−, K∗+ → KS0π+ and KS0 → π+π−. [...]
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9. BSM Discovery Potential of Belle II in b->c and b-->s / Tom Browder [BELLE2-TALK-CONF-2023-021] 35 minutes. Workshop format with multiple interruptions.
09 March 2023
/ Anomalies at the Simons Center
We describe the BSM discovery potential of Belle II@SuperKEKB in b->c and b->s processes. [...]
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10. Measurement of the photon-energy spectrum in inclusive B-> X_s gamma decays identified using hadronic decays of the recoil B meson in 2019–2021 Belle II data / Henrikas Svidras ; Arthur Bolz ; Lu Cao ; Markus Röhrken ; et al [BELLE2-CONF-DRAFT-2022-018] [BELLE2-CONF-PH-2022-018]
20 October 2022

We measure the photon-energy spectrum in radiative bottom-meson ($B$) decays into inclusive final states involving a strange hadron and a photon. [...]
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