| Title▼ | Belle II Number▼ | Tags | Submit date▼ | Downloads |
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Measurement of chi_d and other time-dependent B decay measurements at Belle IIPublic
Inclusive semi-leptonic decays of π΅ mesons are an excellent avenue for the study of B\bar{B} mixing, given their large branching fraction. In this talk, we present the measurement of the time integrated mixing parameter, ππ, using data collected by the Belle II detector. The Belle II experiment is located at the SuperKEKB laboratory in Tsukuba, Jaβ¦ |
BELLE2-TALK-CONF-2021-081 | - | 2021-07-26 |
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Charm Status and Prospects at Belle IIPublic
The Belle II experiment at the asymmetric π+πβ collider, SuperKEKB, aims to record 50 abβ1 of data over the next decade, a factor of 50 more than Belle. During the first 1.5 years of operations, around 90 fbβ1 of data were collected. This dataset is used to measure the lifetimes of a few charm hadrons, confirming the expected performance of the Beβ¦ |
BELLE2-TALK-CONF-2021-079 | - | 2021-07-26 |
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Search for rare electroweak decay π΅+βπΎ+Ξ½Ξ½ in early Belle II datasetPublic
In the recent years, several measurements of π΅-decays with flavor changing neutral currents (FCNC), i.e. πβπ ββ transitions, hint at deviations from the Standard Model (SM) predictions.A search for the flavor-changing neutral current decay π΅+βπΎ+ππΒ― is performed with data sample corresponding to 63 ππβ1 collected at the Ξ₯(4S) resonance by the Belle β¦ |
BELLE2-TALK-CONF-2021-083 | - | 2021-07-26 |
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Bottomonium results and prospects at Belle IIPublic
The Belle II experiment at the SuperKEKB energy-asymmetric π+πβ collider is an upgrade of the B factory facility at KEK in Tsukuba, Japan. The experiment began operation in 2019 and aims to record a factor of 50 times more data than its predecessor. Belle II is uniquely capable of studying the so-called "XYZ" particles: heavy exotic hadrons consisβ¦ |
BELLE2-TALK-CONF-2021-082 | - | 2021-07-26 |
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Prospects for long-lived particle searches at Belle IIPublic
The Belle II experiment at the asymmetric π+πβ collider, SuperKEKB, is a substantial upgrade of the Belle/KEKB experiment. Belle II aims to record 50 abβ1 of data over the course of the project. During the first physics runs in 2018-2020, around 100 fbβ1 were collected. Large improvements in the instantaneous luminosity are expected in the coming β¦ |
BELLE2-TALK-CONF-2021-076 | - | 2021-07-26 |
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Belle II Status and Prospects for New PhysicsPublic
I review the status of Belle II@SuperKEKB including new luminosity world records, recent results on the dark sector, B physics, charm and tau physics. The prospects for the discovery of new physics are also discussed. |
BELLE2-TALK-CONF-2021-062 | - | 2021-07-19 |
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Sensitivity studies on the lepton universality in the channel $\Upsilon(nS)\rightarrow \ell \ell$ via initial-state radiationPublic
In this note, we present the results of sensitivity studies on the lepton universality in the channel Ο(nS) β π΅π΅ via initial-state radiation (ISR). The study is performed with Phase III Monte Carlo samples and cover an integrated luminosity range up to the design value of 50 abβ1. This work show that the even with the complete design dataset the sβ¦ |
BELLE2-NOTE-PL-2021-006 | - | 2021-07-16 |
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Rediscovery of the $\Upsilon(4S) \to \eta h_b(1P)$ transition at \belletwo: approved plotsPublic
Approved plots from the B2N-PH-2021-19 |
BELLE2-NOTE-PL-2021-007 | - | 2021-07-16 |
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Tau measurements and prospectsPublic
Overview of the latest tau physics results from Belle II as well as prospects. Covering the tau mass and lifetime measurements, tests of lepton flavor universality and searches for LFV/LNV decays. |
BELLE2-TALK-CONF-2021-072 | - | 2021-07-07 |
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Electroweak penguin measurements and prospectsPublic
In the recent years, several measurements of π΅-decays with flavor changing neutral currents, i.e. πβπ transitions hint at deviations from the Standard Model (SM) predictions.These decays are forbidden at tree-level in the SM and can only proceed via suppressed loop level diagrams. Rare decays of π΅ mesons are an ideal probe to search for phenomena β¦ |
BELLE2-TALK-CONF-2021-073 | - | 2021-07-07 |
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Belle II: status and prospectsPublic
Belle II: status and prospects |
BELLE2-TALK-CONF-2021-064 | - | 2021-07-07 |
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Quarkonium at Belle IIPublic
The Belle II experiment at the SuperKEKB energy-asymmetric π+πβ collider is an upgrade of the B factory facility at KEK in Tsukuba, Japan. |
BELLE2-TALK-CONF-2021-065 | - | 2021-07-07 |
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Measurement of the branching fraction for $B^{0} \to \pi^{0} \pi^{0}$ decays reconstructed in 2019β2020 Belle II dataPublic
We report the first reconstruction of the $B^{0} \to \pi^{0} \pi^{0}$ decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 \invfb of integrated luminosity. We find $14.0^{+6.8}_{-5.6}$ signal decays, corresponding to a significance of 3.4 standard deviations and determine a branching ratio of $\mathcal{B}(\Bpipi) = [0β¦ |
BELLE2-CONF-PH-2021-003 | - | 2021-07-06 |
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15th annual Belle PAC review meeting : Feb.-Mar. 2021Public
B-factory Programme Advisory Committee Full report for Annual Review Meeting 1β2 and 8-9 March 2021 Remote Meeting |
BELLE2-REPORT-2024-013 | - | 2021-07-05 |
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Belle II: status and prospectsPublic
The Belle II experiment at the SuperKEKB energy-asymmetric e+eβ collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The target luminosity of the machine is $6\times10^{35}$ cm$^{β2}$s$^{β1}$ and the Belle II experiment aims to record 50 ab$^{β1}$ of data, a factor of 50 more than its predecessor. With this dβ¦ |
BELLE2-TALK-CONF-2021-061 | - | 2021-07-01 |
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Quarkonium on Belle IIPublic
The Belle II experiment at the SuperKEKB energy-asymmetric π+πβ collider is an upgrade of the B factory facility at KEK in Tsukuba, Japan. |
BELLE2-TALK-CONF-2021-060 | - | 2021-06-29 |
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Recent results and prospects from Belle IIPublic
The Belle II experiment at the SuperKEKB energy-asymmetric e+eβ collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The target luminosity of the machine is $6\times10^{35}$ cm$^{β2}$s$^{β1}$ and the Belle II experiment aims to record 50 ab$^{β1}$ of data, a factor of 50 more than its predecessor. With this dβ¦ |
BELLE2-TALK-CONF-2021-066 | - | 2021-06-28 |
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Vacuum polarization measurements at Belle IIPublic
This is a draft report about the "Status of Belle II Measurements Related with HVP Contribution to Muon g-2", to be presented at Muon g-2 theory initiative workshop (from 28 June 2021 to 3 July 2021, Japan, Online). |
BELLE2-TALK-CONF-2021-067 | - | 2021-06-28 |
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Rediscovery of $\Bz\to\jpsi\KL$ at Belle IIPublic
We present preliminary results on the reconstruction of the \bjpsikl decay, where $\jpsi\to\mumu$ or \epem. Using a dataset corresponding to a luminosity of $62.8\pm0.6\invfb$ collected by the Belle II experiment at the SuperKEKB asymmetric energy \epem collider, we measure a total of $267\pm21$ candidates with $\jpsi\to\mumu$ and $226\pm20$ with β¦ |
BELLE2-CONF-PH-2021-009 | - | 2021-06-23 |
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Latest results from Belle and Belle IIPublic
In this invited plenary talk, we report recent results based on the e+e- collision data recorded by the Belle II experiment and the legacy data from its predecessor (Belle), both at the KEK laboratory of Japan. These would include the study of CP violation in B and D meson decays, search for suppressed decays of B and D mesons and tau leptons, as β¦ |
BELLE2-TALK-CONF-2021-057 | - | 2021-06-14 |
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