| Title▼ | Belle II Number▼ | Tags | Submit date▼ | Downloads |
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Searches for dark sector particles in Belle II and LHCbPublic
Searches for dark sector particles in LHCb/Belle II |
BELLE2-TALK-CONF-2022-070 | - | 2022-07-18 |
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Recent Belle II results related to anomalies in semileptonic and hadronic B decayPublic
The rate of semitauonic B decays has been consistently above theory expectations since these decays were first measured. Recently significant differences between the forward-backward asymmetry in B -> Denu and B -> Dmunu were also reported. Belle II data are well suited to probe these anomalies. The low-background collision environment along with β¦ |
BELLE2-TALK-CONF-2022-073 | - | 2022-07-14 |
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Recent Belle II results on electroweak and radiative penguinsPublic
Decays of B mesons that proceed through electroweak and radiative penguin amplitudes attract significant attention due to a number of observed discrepancies between the standard-model predictions and the results. Belle II is expected to perform measurements on channels closely related to those exhibiting anomalies and that are uniquely available t⦠|
BELLE2-TALK-CONF-2022-072 | - | 2022-07-14 |
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Recent Belle II results on electroweak penguinsPublic
Recent Belle II results on electroweak and radiative penguins are shown. |
BELLE2-TALK-CONF-2022-069 | - | 2022-07-09 |
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Recent Belle II results on the CKM parameters $|V_{cb}|$ and $|V_{ub}|$Public
emileptonic π΅ decays allow to determine the magnitudes of the CKM matrix parameters |πππ| and |ππ’π|, two fundamental parameters of the standard model flavor sector. At Belle II these measurements use both exclusive decays such as π΅βπ·ββπ and π΅βπβπ, or inclusive ππβπ or ππ’βπ final states restricted in phase space. The low-background collision enviroβ¦ |
BELLE2-TALK-CONF-2022-082 | - | 2022-07-06 |
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Recent quarkonium results at Belle IIPublic
Belle II offers unique possibilities for the discovery and interpretation of exotic multiquark combinations to probe the fundamentals of QCD.This talk present recent results on the amplitude analysis of the charmonium-like state π(3940) and searches for the hidden bottom transition between π(10750) and πππ½. |
BELLE2-TALK-CONF-2022-081 | - | 2022-07-06 |
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Recent Belle II results on hadronic B decaysPublic
The investigation of π΅-meson decays to charmed and charmless hadronic final states is a keystone of the Belle II physics program. It allows for theoretically reliable and experimentally precise constraints on the CKM Unitarity Triangle fit, and is sensitive to effects from non-SM physics. Results on branching ratios, direct CP-violating asymmetrieβ¦ |
BELLE2-TALK-CONF-2022-076 | - | 2022-07-06 |
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Recent Belle II results on electroweak penguinsPublic
Decays of B mesons that proceed through electroweak penguin amplitudes attract significant attention due to a number of observed discrepancies between the standard-model predictions and the results. Belle II is expected to perform measurements on channels closely related to those exhibiting anomalies and that are uniquely available to Belle II. Th⦠|
BELLE2-TALK-CONF-2022-079 | - | 2022-07-06 |
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Recent dark-sector results at Belle IIPublic
Belle has unique reach for a broad class of models that postulate the existence of dark matter particles with MeVβGeV masses. This talk presents recent world-leading physics results from Belle II searches for dark Higgstrahlung and invisible πβ² decays; as well as the near-term prospects for other dark-sector searches. |
BELLE2-TALK-CONF-2022-078 | - | 2022-07-06 |
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Recent Belle II results on semitauonic decays and tests of lepton-flavor universalityPublic
The rate of semitauonic π΅ decays has been consistently above theory expectations since these decays were first measured. Recently significant differences between the forward-backward asymmetry in π΅βπ·βππ and π΅βπ·βππ were also reported. Belle II data is well suited to probe such anomalies. The low-background collision environment along with the possiβ¦ |
BELLE2-TALK-CONF-2022-075 | - | 2022-07-06 |
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Recent tau-lepton results at Belle IIPublic
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 talk presents recent world-leading physics results from Belle II searches for tau decays into a scalar non-SM particle and a lepton. Perspective⦠|
BELLE2-TALK-CONF-2022-077 | - | 2022-07-06 |
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Measurement of charm lifetimes at Belle IIPublic
Outstanding vertexing performance and low-background environment are key enablers of a systematic Belle II program targeted at measurements of charm hadron lifetimes Recent results from measurements of π·0 meson, π·+ meson and Ξπ baryon lifetimes are presented. The results are the most precise to date. |
BELLE2-TALK-CONF-2022-074 | - | 2022-07-06 |
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Recent Belle II results on decay-time-dependent CP violationPublic
Measurements of decay-time dependent CP violation are chief goals of the Belle II physics program. Comparison between penguin-dominated πβππΒ―π and tree-dominated πβππΒ―π results allows for stringent tests of CKM unitarity that are sensitive to non-SM physics. This talk present first Belle II results on the mixing rate and lifetime of π΅0 mesons, an β¦ |
BELLE2-TALK-CONF-2022-080 | - | 2022-07-06 |
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Recent results at Belle IIPublic
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. The design luminosity of the machine is 6Γ10^35 cm-2s-1 and the Belle II experiment aims to ultimately record 50 ab-1 of data, a factor of 50 more than its predecessor. With this data set, Bellβ¦ |
BELLE2-TALK-CONF-2022-083 | - | 2022-07-04 |
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Quarkonium at Belle IIPublic
Belle II offers unique possibilities for the discovery and interpretation of exotic multiquark combinations to probe the fundamentals of QCD. Several quarknium(-like) states and exclusive B decays to charmonium(-like) states were rediscovered with currently available data at Belle II. Belle II collected data samples near 10.75 GeV to study Ξ₯(10753β¦ |
BELLE2-TALK-CONF-2022-084 | - | 2022-07-04 |
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Hadronic B decay to charm final states at Belle (II)Public
Recent results on B to charm decays from Belle and Belle II to be presented at the "Status and prospects of Non-leptonic B meson decays" workshop in Seigen, Germany, May 31, 2022 |
BELLE2-TALK-CONF-2022-046 | - | 2022-06-30 |
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QCD Program at Belle IIPublic
Opportunities for precision QCD physics in hadronization at Belle II |
BELLE2-TALK-CONF-2022-062 | - | 2022-06-27 |
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Angular analysis of $B^+ \to \rho^+\rho^0$ decays reconstructed in 2019, 2020, and 2021 Belle~II dataPublic
We report on a Belle II measurement of the branching fraction~($\mathcal{B}$), longitudinal polarization fraction ~($f_L$), and \CP~asymmetry~$\mathcal{A}_{\CP}$ of $B^+\to \rho^+\rho^0$ decays. We reconstruct $B^+\to \rho^+(\to \pi^+\pi^0(\to \gamma\gamma))\rho^0(\to \pi^+\pi^-)$ decays in a sample of SuperKEKB electron-positron collisions colle⦠|
BELLE2-CONF-PH-2022-005 | - | 2022-06-23 |
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Measurement of the $\Omega_c^0$ lifetime at Belle IIPublic
We report on a measurement of the \Omgc lifetime using $\Omgc\to\Omg\pip$ decays reconstructed in the \epem-collision data collected by Belle~II between 2019 and the first half of 2021, which correspond to \lumi of integrated luminosity. The result, $\tau(\Omgc)=\tauOmgc\pm\tauOmgcStat\pm\tauOmgcSyst\fs$, agrees with recent measurements indicating⦠|
BELLE2-PUB-PH-2022-001 | - | 2022-06-23 |
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Study of Exclusive $B \to \pi e^+ \nu_e$ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb$^{-1}$ of Belle II DataPublic
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. We determin⦠|
BELLE2-CONF-PH-2022-008a | - | 2022-06-16 |
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