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Recent quarkonium results at Belle IIPublic
Belle II offers unique possibilities for discovering and interpreting exotic multiquark bound states to probe the fundamentals of QCD. This talk presents recent results on a unique data set collected at energies above the Y(4S), including searches for the hidden bottom transition between Y(10750) and chi_bJ(1P). |
BELLE2-TALK-CONF-2023-068 | - | 2023-05-30 |
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Determination of the Cabibbo-Koyabashi-Maskawa matrix elements |Vcb| and |Vub| at Belle and Belle II Public
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―. In this talk I will review the experimental status of these fundamental parameters with a focus on the latest developments and new results β¦ |
BELLE2-TALK-CONF-2023-057 | - | 2023-05-22 |
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17th annual Belle PAC review meeting : Feb. 19-21, 2023Public
B-factory Programme Advisory Committee Full Report for Annual Review Meeting at KEK 19-21 February 2023 |
BELLE2-REPORT-2024-005 | - | 2023-05-22 |
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Belle II status and prospects for studies of charged currentsPublic
Belle II measurements of light lepton universality tests and V_cb with B0 to D*l_nu is presented |
BELLE2-TALK-CONF-2023-060 | - | 2023-05-15 |
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Belle II status and prospects for studies of tau decaysPublic
We present here the status and prospects on tau decay studies at Belle II: direct searches for lepton flavor violation, high precision measurement of the tau lepton mass and prospects for lepton flavor universality tests are reported. |
BELLE2-TALK-CONF-2023-058 | - | 2023-05-15 |
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Belle II status and prospects for studies of neutral currentsPublic
We present the current Belle II results in neutral current transitions (b->sll, b->sgamma, b->Knunu) and the prospects. |
BELLE2-TALK-CONF-2023-059 | - | 2023-05-15 |
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Semileptonic $B$-meson decays including $b \rightarrow c$ anomalies at Belle IIPublic
We present recent measurements of semileptonic $B$-meson decays using a data sample collected at the $\Upsilon(4S)$ resonance by the Belle~II experiment corresponding to an integrated luminosity of $189\,\mathrm{fb}^{-1}$. We determine the CKM-matrix elements $V_\mathrm{cb}$ using untagged $B^0 \to D^{*-} \, \ell^{+} \, \nu_\ell$ decays and $V_\ma⦠|
BELLE2-CONF-PROC-2023-014 | - | 2023-05-15 |
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Electroweak penguins and radiative B decays at Belle IIPublic
Decays of B mesons involving the transition of a b quark into an s quark are good probes of physics beyond the standard model. Such decays are studied at the Belle II experiment, a detector located along the SuperKEKB electron-positron collider, and with data corresponding to an integrated luminosity of 189 fbβ1 collected at the energy of the Ξ₯(4Sβ¦ |
BELLE2-CONF-PROC-2023-015 | - | 2023-05-15 |
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Recent tau and dark-sector results at Belle IIPublic
Belle has unique sensitivity to a broad class of models that postulate the existence of dark matter particles with MeVβGeV masses. In addition, the low-background environment of electron-positron collisions along with the large expected sample size and an hermetic detector make Belle II the premier experiment for studying tau-lepton physics. This β¦ |
BELLE2-TALK-CONF-2023-063 | - | 2023-05-14 |
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Recent Belle II results on hadronic B decaysPublic
The investigation of B-meson decays to charmed and charmless hadronic final states is a keystone of the Belle II program. Analyses of such decays provide reliable and experimentally precise constraints on the CKM Unitarity Triangle fit, are sensitive to effects from non-SM physics, and further knowledge about uncharted b->c hadronic transitions. W⦠|
BELLE2-TALK-CONF-2023-061 | - | 2023-05-14 |
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Heavy quarkonium and multiquark states Public
Heavy quarkonium and multiquark states |
BELLE2-TALK-CONF-2023-064 | - | 2023-05-14 |
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Recent Belle II results on time-dependent CP violation and charm physicsPublic
Measurements of time dependent CP violation are chief goals of the Belle II physics program. Comparisons of penguin-dominated b-> qqbar s to tree-dominated b-> ccbar s results allow for stringent tests of CKM unitarity that are sensitive to non-SM physics, but require excellent vertexing capabilities. After presenting recent world-leading results β¦ |
BELLE2-TALK-CONF-2023-062 | - | 2023-05-14 |
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Recent Belle II results on semileptonic B decays and LFU testsPublic
Semileptonic B decays allow to determine the magnitudes of the CKM matrix parameters |V_cb| and |V_ub|, two fundamental parameters of the SM flavor sector. In addition, the observed rate of semitauonic B decays has been consistently above expectations since these decays were first measured. At Belle II these measurements use both exclusive decays β¦ |
BELLE2-TALK-CONF-2023-065 | - | 2023-05-14 |
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Recent semileptonic results from Belle and Belle IIPublic
Summary of recent semileptonic results of Belle and Belle II for the Flavor@TH Workshop at CERN in May 2023. |
BELLE2-TALK-CONF-2023-056 | - | 2023-05-13 |
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Suppressing Beam Background and Fake Photons at Belle II Using BDTsPublic
The Belle II experiment situated at the SuperKEKB energy-asymmetric π+πβ collider began operation in 2019. It has since recorded half of the data collected by its predecessor, and reached a world record instantaneous luminosity of 4Γ10^34 cm^-2s^-1. For distinguishing decays with missing energy from background events at Belle II, the residual caloβ¦ |
BELLE2-POSTER-CONF-2023-001 | - | 2023-05-08 |
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Belle and Belle II measurements of B->D* angular distributionPublic
Belle and Belle II measurements of B->D* angular distribution |
BELLE2-TALK-CONF-2023-066 | - | 2023-05-08 |
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Time-dependent CP violation results at Belle IIPublic
We report updates on time-dependent CP-violation observables at Belle II. The benchmark measurements of the B0 lifetime ΟB0 and mixing frequency βmd using flavor specific hadronic decays and the determination of the CP-violating phase sin2Ο1 in b β ccs transitions have been performed using data collected between 2019β2021. These analyses use only β¦ |
BELLE2-CONF-PROC-2023-012 | - | 2023-05-08 |
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Quarkonium and charm at Belle II Public
We present recent results from the Belle II experiment related to quarkonium and charm physics. With data samples collected by Belle II during special operations of the SuperKEKB collider above the $\Upsilon(4S)$ resonance, we study the processes $e^+e^- \to \omega\chi_{bJ}(1P)$ ($J=0$, 1, or 2), search for the bottomonium equivalent of the X(3872β¦ |
BELLE2-CONF-PROC-2023-013 | - | 2023-05-07 |
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Hadronic $B$ decays and charm at Belle IIPublic
We report the measurements of various hadronic $B$ decays and charm at the Belle II experiment using a $362\invfb$ sample of electron-positron collisions collected at the $\FourS$ resonance. All results are competitive with the previous determination, and some of them are already competitive with the world's best measurement. |
BELLE2-CONF-PROC-2023-011 | - | 2023-05-07 |
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Dark sectors and Ο physics at Belle IIPublic
The possibility of dark sectors weakly coupling to Standard Model (SM) particles through new light mediators is explored at the Belle II experiment. We present here results from three different searches, for a long-lived (pseudo)scalar particle; for a di-tau resonance in four-muon final states events and the update on the search for a ZⲠboson dec⦠|
BELLE2-CONF-PROC-2023-010 | - | 2023-05-02 |
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