Exclusive $B^0 \to π^- \ell^+ ν_\ell$ Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb$^{-1}$ of Belle II Data
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- Abstract
- We present the results of the re-discovery of the decay $B^0 \to \pi^- \ell^+ \nu_\ell$ in 34.6 fb$^{-1}$ of Belle II data using hadronic $B$-tagging via the Full Event Interpretation algorithm. We observe 21 signal events on a background of 155 in a fit to the distribution of the square of the missing mass, $M_{\mathrm{miss}}^2$, with a significance of 5.69$\sigma$, and determine a total branching fraction of (1.58 $\pm$ 0.43$_{\mathrm{stat}}$ $\pm$ 0.07$_{\mathrm{sys}}$) $\times 10^{-4}$.
- Autoren
- Belle II Collaboration
- F Abudinén
- I Adachi
- R Adak
- K Adamczyk
- P Ahlburg
- JK Ahn
- H Aihara
- N Akopov
- A Aloisio
- F Ameli
- L Andricek
- N Anh Ky
- DM Asner
- H Atmacan
- V Aulchenko
- T Aushev
- V Aushev
- T Aziz
- V Babu
- S Bacher
- S Baehr
- S Bahinipati
- AM Bakich
- P Bambade
- Sw Banerjee
- S Bansal
- M Barrett
- G Batignani
- J Baudot
- M Bauer
- A Beaulieu
- J Becker
- PK Behera
- M Bender
- JV Bennett
- E Bernieri
- FU Bernlochner
- M Bertemes
- M Bessner
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- V Bhardwaj
- B Bhuyan
- F Bianchi
- T Bilka
- S Bilokin
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- A Bozek
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- G Caria
- G Casarosa
- C Cecchi
- D Červenkov
- M-C Chang
- P Chang
- R Cheaib
- V Chekelian
- YQ Chen
- Y-T Chen
- BG Cheon
- K Chilikin
- K Chirapatpimol
- H-E Cho
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- S Choudhury
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- F Dattola
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- V Zhilich
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- VI Zhukova
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- A Zupanc
- Autoren-URL
- http://arxiv.org/abs/2008.08819v1
- Schlüsselwörter
- hep-ex
- hep-ex
- Datum der Veröffentlichung
- 2020
- Datum der Datenerfassung
- 2020
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2020
- Titel
- Exclusive $B^0 \to π^- \ell^+ ν_\ell$ Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb$^{-1}$ of Belle II Data
Files
2008.08819v1.pdf
Datenquelle: arXiv
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