Belle II Document Server 35 records found  beginprevious21 - 30next  jump to record: Search took 0.00 seconds. 
21. Rediscovery of the D0 ->KS0 KS0 decay with early Belle II data / The Belle II Collaboration [BELLE2-NOTE-PL-2020-020]
27 July 2020

The decay D0 ->KS0 KS0 is among the most interesting modes for the understanding of CP violation in charm decays [...]
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22. Belle II experiment sensitivity to the LFV decay tau -> e + alpha / The Belle II Collaboration [BELLE2-NOTE-PL-2020-018]
27 July 2020

We study the charged lepton flavor violating decay tau -> e alpha, where alpha is a non-standard invisible boson that leaves the Belle II detector undetected. [...]
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23. Study of e+e−→J/ψ(→µ+µ−) via initial-state radiation at Belle II / The Belle II Collaboration [BELLE2-NOTE-PL-2020-017]
25 July 2020

We study e+e−→J/ψ(→µ+µ−) via initial-state radiation (ISR) using a data sample of an integrated luminosity of 37.8 fb^-1 collected with the Belle II detector at the Υ(4S) resonance and nearby. [...]
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24. D_{s}^{+} reconstruction plots / The Belle II Collaboration ; [BELLE2-NOTE-PL-2020-016]
25 June 2020

This document contains the Ds+ mass plots reconstructed in the decays to the following final states: phi[K+K-]pi, anti-K*[K-pi+]K+, Ks0[pi+pi-]K+ [...]
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25. L1 trigger efficiencies for e+e− -> tau+tau- events / The Belle II Collaboration [BELLE2-NOTE-PL-2020-015]
24 July 2020

The Level 1 trigger efficiency has been studied in τ-pair events. [...]
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26. 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). [...]
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27. 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..
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28. 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. [...]
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29. 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..
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30. 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 [...]
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