Papers

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2021-10-10
16:05
Measurements of the branching fractions for B→K∗γ decays at Belle II / R. Tiwary ; R. Mehta ; R. Dhamija ; S Sandilya ; et al [BELLE2-CONF-PH-2021-004]
10 October 2021

This paper reports a study of B→K∗γ decays using 62.8±0.6 fb−1 of data collected during 2019–2020 by the Belle II experiment at the SuperKEKB e+e− asymmetric-energy collider, corresponding to (68.2±0.8)×10^6 BB events. [...]
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2021-10-07
09:11
Measurement of the $B^-\to D^0 \ell^- \bar\nu_\ell$ Branching Fraction in 62.8~fb$^{-1}$ of Belle II data / Philipp Horak ; Christoph Schwanda [BELLE2-CONF-PH-2021-011]
07 October 2021

We report a measurement of the branching fraction of the semileptonic decay \bdlnu (and its charge conjugate) using \mbox{$62.8~\text{fb}^{-1}$} of $\Upsilon(4S)\to B\bar B$~data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. [...]
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2021-09-09
07:59
Exclusive $B \to X_u \ell \nu_\ell$ Decays with Hadronic Full-event-interpretation Tagging in 62.8\invfb of Belle II Data / Moritz Bauer ; Pablo Goldenzweig ; Nadia Toutounji ; Kevin Varvell [BELLE2-CONF-PH-2021-013]
09 September 2021

We present a reconstruction in early data of the semileptonic decay $B^+ \to \pi^0 \ell^+ \nu_\ell$, and first results of a reconstruction of the decays $B^+ \to \rho^0 \ell^+ \nu_\ell$ and $B^0 \to \rho^- \ell^+ \nu_\ell$ in a sample corresponding to 62.8\invfb of Belle II data using hadronic $B$-tagging via the full-event-interpretation algorithm. [...]
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2021-07-06
04:38
Measurement of the branching fraction for $B^{0} \to \pi^{0} \pi^{0}$ decays reconstructed in 2019–2020 Belle II data / Francis Pham ; Martin Sevior [BELLE2-CONF-PH-2021-003] 23 pages, 10 figures. Supporting material for Winter 2021 conferences
06 July 2021

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. [...]
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2021-06-23
14:18
Rediscovery of $\Bz\to\jpsi\KL$ at Belle II / Belle II Collaboration [BELLE2-CONF-PH-2021-002]
23 June 2021

We present preliminary results on the reconstruction of the \bjpsikl decay, where $\jpsi\to\mumu$ or \epem. [...]
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2021-04-13
14:24
Measurement of the branching fractions of B → η'K decays using 2019/2020 Belle II data / Belle II Collaboration [BELLE2-CONF-PH-2021-007]
13 April 2021

This note describes the rediscovery of B → η' K decays in Belle II data, both in the charged and neutral final state: B0 → η' KS and B± → η' K± . [...]
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2021-04-06
13:56
Measurement of the time-integrated mixing probability chi_d with a semileptonic double-tagging strategy and 34.6 fb^-1 of Belle II collision data / Florian Bernlochner ; Jochen Dingfelder ; Stephan Duell ; Peter Lewis [BELLE2-CONF-PH-2021-004]
06 April 2021

We present a first measurement of the time-integrated mixing probability chi_d using Belle II collision data corresponding to the integrated luminosity of 34.6 fb^-1. [...]
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2021-03-25
11:30
Muon and electron identification efficiencies and hadron-lepton mis-identification rates at Belle II for Moriond 2021 / LeptonID group ; Belle II Collaboration [BELLE2-CONF-PH-2021-002] For Moriond 2021
25 March 2021

We present a collection of selected results on the performance of \belletwo in the identification of electrons and muons. [...]
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2021-03-17
21:45
Study of B→D(∗)h decays using 62.8 fb−1 of Belle II data / C.La Licata ; J.Libby ; M.Nayak ; N.Rout ; et al [BELLE2-CONF-PH-2021-008, arXiv:2104.03628] [BELLE2-CONF-PH-2021-008]
17 March 2021

We report measurements related to hadronic $B$ decays to final states that contain charm mesons. [...]
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2020-09-22
09:24
Measurements of branching fractions and CP-violating charge asymmetries in charmless $B$ decays reconstructed in 2019--2020 Belle~II data / F. Abudinén ; P.-T. Chang ; Y.-C. (Janice) Chen ; E. Ganiev ; et al [BELLE2-CONF-PH-2020-012] Prepared for ICHEP2020
20 September 2020

We report on first measurements of branching fractions~($\mathcal{B}$) and CP-violating charge asymmetries~($\mathcal{A}_{\rm CP}$) in charmless $B$ decays at Belle~II. [...]
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