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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2020-09-01
09:22 |
Measurement of Hadronic Mass Moments in B->Xclv Decays at Belle II
/ Maximilian Welsch ; Florian Bernlochner
[BELLE2-CONF-PH-2020-011]
01 September 1993
We present measurements of the first six hadronic mass moments in semileptonic $B \rightarrow X_c \ell \nu $ decays. [...]
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2020-08-25
12:31 |
Measurement of the semileptonic $\bar{B^0} \rightarrow D^{*} \ell \nu_{\ell}$ branching fraction with fully reconstructed $B$ meson decays and 34.6 fb$^{-1}$ of Belle~II data
/ Kyle Amirie ; Florian Bernlochner ; Racha Cheaib ; Michael Eliachevitch ; et al
[BELLE2-CONF-PH-2020-009]
25 August 2020
We present a first measurement of the $\bar{B^0} \rightarrow D^{*} \ell \nu_{\ell}$ branching fraction using fully reconstructed $B$ meson decays employing the Full Event Interpretation algorithm [...]
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2020-08-05
15:20 |
Studies of the semileptonic $\bar B^0\to D^{*+}\ell^-\bar\nu_\ell$ and $B^-\to D^{0}\ell^-\bar\nu_\ell$ decay processes with \mbox{34.6 fb$^{-1}$} of Belle II data
/ Florian Bernlochner ; Lu Cao ; Daniel Dorner ; Philipp Horak ; et al
[BELLE2-CONF-PH-2020-008]
05 August 2020
We report measurements of the $\bar B^0\to D^{*+}\ell^-\bar\nu_\ell$ and $B^-\to D^{0}\ell^-\bar\nu_\ell$ processes using \mbox{34.6 fb$^{-1}$} of collision events recorded by the Belle~II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider [...]
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2020-08-05
14:51 |
A calibration of the Belle II hadronic tag-side reconstruction algorithm with $B \rightarrow X\ell \nu$ decays
/ William Sutcliffe ; Florian Bernlochner
[BELLE2-CONF-PH-2020-005]
08 May 2020
Tag-side reconstruction is an important method for reconstructing $B$ meson decays with missing energy. [...]
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2020-08-05
06:11 |
Exclusive $B^0 \to \pi^- \ell^+ \nu_\ell$ Decays with Hadronic Full Event Interpretation Tagging in 34.6\invfb of Belle II Data
/ Nadia Toutounji ; Kevin Varvell ; Moritz Bauer ; Pablo Goldenzweig
[BELLE2-CONF-PH-2020-007]
05 August 2020
We present the results of the re-discovery of the decay $B^0 \to \pi^- \ell^+ \nu_\ell$ in 34.6\invfb of Belle II data using hadronic $B$-tagging via the Full Event Interpretation algorithm [...]
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2020-08-04
05:12 |
$\tau$ lepton mass measurement at Belle II
/ The Belle II Collaboration
[BELLE2-CONF-PH-2020-010]
04 August 2020
The reconstruction of tau-pair production, $\epem \to \tau^{+}\tau^{-}$, from the subsequent 3-prong ($\tau^{+} \rightarrow \pi^{+} \pi^{-} \pi^{+} \bar{\nu}_{\tau}$) and 1-prong ($\tau^{-} \to \ell^{-} \bar{\nu}_{\ell} \nu_{\tau}$, $\tau^{-} \to h^{-} \nu_{\tau}$ or $\tau^{-} \to \pi^{-} \pi^0 \nu_{\tau}$) decays, is presented using 8.76~\invfb of $\epem $ collision data of {\belletwo} at the center-of-mass energy $\sqrt{s} = m_{\Upsilon(4S)}$ [...]
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2020-07-31
08:00 |
Rediscovery of $B \to \phi K^{(*)}$ decays and measurement of the longitudinal polarization fraction $f_L$ in $B \to \phi K^{*}$ decays using the Summer 2020 Belle II dataset
/ The Belle II Collaboration
[BELLE2-CONF-PH-2020-006]
31 July 2020
We utilize a sample of 34.6\invfb, collected by the Belle II experiment at the SuperKEKB asymmetric energy \epem\ collider, to search for the $\Bp \to \phi \Kp$, $\Bp \to \phi \Kstarp$, $\Bz \to \phi \KS$, and $\Bz \to \phi \Kstarz$ decays [...]
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2020-07-28
10:17 |
First flavor tagging calibration using 2019 Belle II data
/ Fernando Abudinén ; Takeo Higuchi ; Colm Murphy
[BELLE2-CONF-PH-2020-004]
28 July 2020
We report on the first calibration of the standard Belle II B-flavor tagger using the full data set collected at the Upsilon(4S) resonance in 2019 with the Belle II detector at the SuperKEKB collider, corresponding to 8.7/fb of integrated luminosity. [...]
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2020-05-15
11:38 |
Measurement of the $B^{0}$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset
/ Reem Rasheed ; Jerome Baudot ; Giulio Dujany ; Sviatoslav Bilokin ; et al
[BELLE2-CONF-PH-2020-003]
15 May 2020
This document presents the measurement of B 0 meson lifetimes using the 2019 Belle II dataset that corresponds to an integrated luminosity of $8.7 \pm 0.2 fb^{-1}$. [...]
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