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1167.
| Measurement of the tracking efficiency and fake rate with e+e- -> tau+tau- events
/ The Belle II Collaboration
[BELLE2-NOTE-PL-2020-014]
24 July 2020
The tracking efficiency and fake rate have been measured using e+e− → τ+τ− events, where one tau lepton decays leptonically (τ → l±ν ν ̄ , l = e, μ) while the other decays hadronically into three charged pions (τ → 3π±ντ + nπ0). [...]
Fulltext:  PDF; |
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1168.
| Search for Dark Higgsstrahlung in $e^+e^- \rightarrow \mumu$ and missing energy final states with the Belle II experiment.
/ The Belle II Collaboration
[BELLE2-NOTE-PL-2020-013]
23 July 2020
This note contains the approved plots associated with the Dark Higgstrahlung analysis work presented in BELLE2-NOTE-PH-2020-048..
Fulltext: PDF; |
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1169.
| Search for an invisible Z' in e+ e- -> mu+ mu- + missing energy final states in early phase 3 data
/ The Belle II Collaboration
[BELLE2-NOTE-PL-2020-012]
23 July 2020
This note presents plots associated with the search for an invisible $Z^{\prime}$ in $e^+ e^- \rightarrow \mu^+ \mu^-$ + missing energy final states targeting early phase 3 data. [...]
Fulltext: PDF; |
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1170.
| Belle II Pixel Detector Commissioning and Operational Experience
/ B. Spruck ; for BelleII PXD - DEPFET collaboration
[BELLE2-CONF-PROC-2020-011]
The 28th International Workshop on Vertex Detectors PoS(Vertex2019)015 https://pos.sissa.it/373/015/pdf
26 February 2020
The Belle II experiment at the Super Flavour Factory SuperKEKB in Tsukuba, Japan, has started regular operation with its final detector setup in spring 2019. [...]
Fulltext: PDF; |
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1171.
| Prompt measurements of time-dependent CP-violation and mixing
/ The Belle II Collaboration
[BELLE2-NOTE-PL-2020-011]
23 July 2020
This document contains public results relative to mixing and time dependent CP violation using $34.6\;{\rm fb}^{-1}$ of data collected in 2019 and 2020..
Fulltext: PDF (additional files); |
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1172.
| Rediscovery of $D^0\to\K^0_S\pi^+\pi^-$ decays in early Belle II data
/ The Belle II Collaboration
[BELLE2-NOTE-PL-2020-010]
23 July 2020
This note presents plots for rediscovery of the $D^{*+}\to D^0\pi^+$, $D^0\to\K^0_S\pi^+\pi^-$ decays, using the data collected by Belle II during 2019, which correspond to 9.6\fb^{-1} of integrated luminosity [...]
Fulltext: PDF; |
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1173.
| Dark Matter searches at Belle II
/ Enrico Graziani
[BELLE2-TALK-DRAFT-2020-031]
[BELLE2-TALK-CONF-2020-034]
22 July 2020
/ :13th International Workshop on the Identification of Dark Matter 2020
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. [...]
Fulltext: PDF; |
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1174.
| Trigger efficiencies for single photon events
/ The Belle II collaboration
[BELLE2-NOTE-PL-2020-009]
22 July 2020
The search for invisible decays of the dark photon A′ is enabled by dedicated single photon triggers. [...]
BELLE-NOTE-PL-2020-009: PDF; |
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1175.
| $D^0$ Lifetime Plots with 2019 Data
/ The Belle II Collaboration ; Angelo Di Canto ; Giulia Casarosa
[BELLE2-NOTE-PL-2020-008]
details of the analysis in B2NOTE-PH-2020-033
24 July 2020
Preliminary plots of the D0 lifetime for the D0 → K−π+, D0 → K−π+π0 and D0 → K−π+π+π− decays reconstructed in the data collected by Belle II during 2019, corresponding to 9.6 fb−1 of integrated luminosity. [...]
Fulltext: PDF; |
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1176.
| Measurement of Hadronic Mass Moments in B->Xclv Decays at Belle II
/ Maximilian Welsch ; Florian Bernlochner
[BELLE2-CONF-PROC-2020-010]
20 July 2020
We present a measurement of the first six hadronic mass moments in semi-leptonic $B\rightarrow X_c \ell \nu$ decays. [...]
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