Belle II Document Server 1,970 records found  beginprevious1150 - 1159nextend  jump to record: Search took 0.00 seconds. 
1150. 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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1151. Beam background evaluation at SuperKEKB and Belle II / Antonio Paladino [BELLE2-TALK-CONF-2020-022]
24 February 2020
/ INSTR20
The SuperKEKB asymmetric electron-positron collider is the upgrade of the KEKB machine and it is expected to achieve the instantaneous luminosity of $8\times10^{35}$ cm$^{-2}$s$^{-1}$, 40 times higher than the record of KEKB. [...]
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1152. Background evaluation at SuperKEKB and Belle II / Antonio Paladino [BELLE2-CONF-PROC-2020-008]
22 April 2020

The SuperKEKB asymmetric electron-positron collider is the upgrade of the KEKB machine and it is expected to achieve the instantaneous luminosity of $8times10^{35}$ cm$^{-2}$s$^{-1}$, 40 times higher than the record of KEKB. [...]
Fulltext: BELLE2-CONF-PROC-2020-008 - Download fulltextPDF; BELLE2-CONF-PROC-2020-008_submitted - Download fulltextPDF; BELLE2-CONF-PROC-2020-008_v2 - Download fulltextPDF;
1153. Dark Sector Searches at Belle II / Michel Bertemes [BELLE2-TALK-DRAFT-2020-017] [BELLE2-TALK-CONF-2020-021]
12 March 2020
/ 3d World Summit on Exploring the Dark Side of the Universe
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. [...]
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1154. Belle II Status and Prospects / Thomas Czank [BELLE2-TALK-DRAFT-2020-014] [BELLE2-TALK-CONF-2020-020]
08 February 2020
/ Moscow International School of Physics 2020
At the end of 2018 the inner subdetectors, SVD (Silicon Vertex Detector) and PXD (Pixel Detector) were installed in Belle II. [...]
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1155. Reconstruction of B0 -> J/ψKS0 and B+ -> J/ψK+ / Y. Yusa [BELLE2-NOTE-PL-2020-004]
21 April 2020

In this public note, we describe the reconstruction of the CP eigenstate of B0-> J/\psi K0S and its control sample of B+ -> J/\psi K+ using the data set taken from the 2019 runs recorded by the Belle II which corresponds to an integrated luminosity of 8.7 /fb..
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1156. Measurement of the branching fraction of $B^{0}\to D^{*-}l^{+}\nu_{l}$ with early Belle II data / Minakshi Nayak ; Abner Soffer ; Florian Bernlochner ; Lu Cao ; et al [BELLE2-CONF-PH-2020-002]
15 April 2020

We measure the branching fractions for the decays $B^{0}\to D^{*-}e^{+}\nu_{e}$ and $B^{*0}\to D^{*-}\mu^{+}\nu_{\mu}$ using the first $8.70 \pm 0.09 fb^{-}$ of data collected by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider using the decays $D^{*+}\to D^0 \pi^+$ and $D^0\to K^-\pi^+$..
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1157. Charmless B decay reconstruction in 2019 data / F. Abudinen ; E. Ganiev ; R. Manfredi ; S. Raiz ; et al [BELLE2-CONF-PH-2020-001]
10 April 2020

We report on the reconstruction of various charmless $B$ decays from electron-positron collisions at the energy corresponding to the $\Upsilon(4S)$ resonance collected with the Belle II detector at the SuperKEKB collider. [...]
Fulltext: BELLE2-CONF-PH-2020-001 - Download fulltextPDF; PublicCharmlessForMoriond - Download fulltextPDF;
1158. Rediscovery of η and η' mesons in early phase 3 Belle II data / Stefano Lacaprara [BELLE2-NOTE-PL-2020-003]
06 April 2020

This note contains approved plots of rediscovery η and η' mesons decay with early phase 3 data, corresponding to an integrated luminosity \int Ldt = 5.18 fb −1 . [...]
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1159. Plots for approval: Full Event Interpretation Reconstruction Performance with 8.7 fb$^{-1}$ of Phase III data in bucket 8 and proc 10. / Belle II Collaboration ; [BELLE2-NOTE-PL-2020-002]
06 April 2020

This note presents hadronic FEI performance plots associated with the analysis work presented in BELLE2-NOTE-PH-2019-031 for approval made using proc 10 and bucket 8 data (8.7 fb$^{-1}$) of early phase III data [...]
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