| Title▼ | Belle II Number▼ | Tags | Submit date▼ | Downloads |
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Prospects for quarkonium studies at Belle IIPublic
Overview of potential Belle II contributions to the study of quarkonium and exotics, and presentation of some early results. |
BELLE2-TALK-CONF-2021-012 | - | 2021-03-15 |
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VAE-WGAN and Fast simulation of Electromagnetic Calorimeter ResponsesPublic
The simulation of particle showers in electromagnetic calorimeters with high precision is a computationally expensive and time consuming process. Fast simulation of particle showers using generative models have been suggested to significantly save computational resources.In this study, the energy responses of electromagnetic calorimeter for electr… |
BELLE2-TALK-CONF-2021-010 | - | 2021-03-15 |
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Rare Charm Decays at Belle IIPublic
Belle II detector, situated at the SuperKEKB $e^{+}e^{-}$ accelerator (plan to have $8 \times 10^{35}cm^{-2}s^{-1}$ instantaneous luminosity), will collect 50 times larger data than the Belle detector. This will allow one to do more precise measurements and tests of the Standard Model(SM). Flavor Changing Neutral Current (FCNC) processes are… |
BELLE2-CONF-PROC-2021-007 | - | 2021-03-14 |
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Approved plots: Preliminary analysis of $D^{*+} \rightarrow D^0 (\pi^+ \pi^- \pi^0) \pi^+$Public
We construct $D^{*+} \rightarrow D^{0}(\pi^+\pi^-\pi^0)\pi^+$ decays in the Moriond 2021 dataset (72\invfb). We perform a yield fir on the $\Delta M$ variable to determine the number of signal events per \invfb. This note contains the public plot associated with internal note BELLE2-NOTE-PH-2020-047. This page is a placeholder until the note numbe… |
BELLE2-NOTE-PL-2021-003 | - | 2021-03-14 |
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X(3872) rediscovery from B decay with 62.8 fb-1 of Phase 3 data at Belle IIPublic
The decay of B -> J/psi pi+ pi- K is studied using 62.8 fb-1 data collected at the Upsilon(4S) resonance. Evidence for B -> X(3872) K with a statistical significance of 4.6sigma is found. This note contains the public plots associated with the internal note BELLE2-NOTE-PH-2020-025. |
BELLE2-NOTE-PL-2021-002 | - | 2021-03-12 |
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Upsilon dipion transitions in Early Phase 3Public
This document includes plots for Upsilon(mS)->pi+pi-Upsilon(pS)(mu+mu-) transitions, where m=2,3,4 and p=1,2, approved for the 14th International Workshop on Heavy Quarkonium. |
BELLE2-NOTE-PL-2021-001 | - | 2021-03-11 |
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Background studies for B0-mixing with hadronic final states at the Belle II experiment.Public
We perform Monte Carlo studies of systematic uncertainties related to backgrounds in time-dependent measurements of the B mixing frequency and lifetime in the B→πD(→Kππ) decay mode. A fit of the background components to 64 fb^-1 Belle II data is performed in two slices of the beam-constrained mass, as well as MC studies on constraining backgrounds… |
BELLE2-TALK-CONF-2021-006 | - | 2021-03-10 |
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Latest results from Belle IIPublic
Presented at La Thuile 2021 (09-11 March 2021). Overview plenary talk covering Belle II latest results |
BELLE2-TALK-CONF-2021-008 | - | 2021-03-10 |
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Search for the LFV-Decay τ→ μπ⁰Public
With the start of data taking using the Belle II detector at the SuperKEKB electron-positron collider a new era in searches for New Physics is on the horizon. We report here on plans and first Monte Carlo studies to search for lepton flavor violation (LFV) in tau leptons. In particular, we investigate the decay τ−>l π0, which is highly forbidde… |
BELLE2-TALK-CONF-2021-007 | - | 2021-03-10 |
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Identification of exotic highly ionising particles at the Belle II pixel detector using unsupervised autoencodersPublic
The Belle II experiment at the high luminosity SuperKEKB e+e- collider has started operation in 2018. The present setup features a 1-layer DEPFET pixel detector with 4 M pixels and trigger rates up to 5 kHz, installed in close proximity to the interaction region. It offers the unique opportunity of detecting highly ionising particles such as antid… |
BELLE2-TALK-CONF-2021-015 | - | 2021-03-09 |
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Belle II pixeldetector cluster analyses using neural network algorithmsPublic
The Belle II DEPFET pixeldetector is operating since 2019, presently with 4 M pixels and trigger rates up to 5 kHz. The pixeldetector has the unique ability to detect exotic highly ionizing particles such as antideuterons or stable tetraquarks which due to their high energy loss do not reach the outer sub-detectors, and thus generate no reconstruc… |
BELLE2-TALK-CONF-2021-016 | - | 2021-03-09 |
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Measurement of charmless B decays at Belle IIPublic
The physics of charmless $B$ decays is an unique portion of the Belle II program. Expected large signals over moderate backgrounds, associated with efficient reconstruction of neutral particles, will enable world-leading determination of the CKM phase $\alpha/\phi_2$, a conclusive understanding of the so-called K-$\pi$ CP puzzle, and further insig… |
BELLE2-TALK-CONF-2021-013 | - | 2021-03-09 |
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Determination of CKM angle $ \phi_{3} $ at Belle and Belle IIPublic
We present the measurement of the angle $ \phi_{3} $ using a model-independent Dalitz plot analysis of $ B^{\pm} \to DK^{\pm}, D \to K_{S}^{0}\pi^{+}\pi^{-} $ decays, which currently provides the best sensitivity. The method uses, as input, measurements of the strong phase of the $ D \to K_{S}^{0}\pi^{+}\pi^{-} $ amplitude from the BESIII collabor… |
BELLE2-CONF-PROC-2021-006 | - | 2021-03-05 |
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Measurement of $b \to u \ell \nu_{\ell}$ at Belle IIPublic
The semileptonic $B$ meson decays of the type $B \to X_u \ell \nu$ are important for measuring the $|V_{ub}|$ CKM matrix element. Recent measurements of inclusive $B \to X_u e \nu_e$ and hadronic-tagged $B^0 \to \pi^- \ell^+ \nu$ from the Belle II experiment are presented. The results are obtained using the data collected at Belle II between March… |
BELLE2-CONF-PROC-2021-005 | - | 2021-02-24 |
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Radiative and electroweak penguin decay at Belle IIPublic
Flavor changing neutral current b to s(d) decay, particularly radiative and electroweak penguin processes, will continue to be of great interest as a probe to search for beyond the Standard Model physics. Lately there have been several anomalies observed in the b to s transition at the LHCb experiment in an angular observable, P5′ and lepton unive… |
BELLE2-CONF-PROC-2021-004 | - | 2021-02-24 |
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BPAC Review in summer 2020 : Jun.29-30, 2020Public
B-factory Programme Advisory Committee Full Report of Autumn Review Meeting 19–20 November 2020 Remote Meeting |
BELLE2-REPORT-2024-033 | - | 2021-02-15 |
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BPAC Review on early phase 3 operations : Jun. 23-25, 2019 Public
B-factory Programme Advisory Committee Full Report of Autumn Review Meeting 19–20 November 2020 Remote Meeting |
BELLE2-REPORT-2024-034 | - | 2021-02-15 |
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BPAC review meeting in autumn 2020 : Nov.19-20, 2020Public
B-factory Programme Advisory Committee Full Report of Autumn Review Meeting 19–20 November 2020 Remote Meeting |
BELLE2-REPORT-2024-014 | - | 2021-02-15 |
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Dark Sector first results at Belle IIPublic
Understanding the nature of dark matter is one of the most exciting challenges in fundamental physics nowadays, requiring the synergy of different search techniques, as well as theoretical inputs. An interesting direction for the investigation of dark matter is the one offered by the \textit{B}-factories. Belle II experiment at the SuperKEKB energ… |
BELLE2-CONF-PROC-2021-003 | - | 2021-01-25 |
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Results and prospects of radiative and electroweak penguin decays at Belle IIPublic
The b → s(d) quark-level transitions are flavor-changing neutral current processes, which are not allowed at tree level in the standard model. These processes are very rare and constitute a potential probe for new physics. Belle II at SuperKEKB is a substantial upgrade of the Belle experiment. It aims to collect 50 ab −1 of data with a design peak… |
BELLE2-CONF-PROC-2021-002 | - | 2021-01-18 |
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