Measurement of the $B^0$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset
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- Zeitschriftenaufsatz
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- Abstract
- 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$^{-1}$. Each candidate is fully reconstructed with hadronic decay final states on the signal side, while the rest-of-event technique allows to infer the decay vertex position on the other (tag) side. $B^0$ lifetime is extracted from an unbinned maximum likelihood fit to the distribution of the difference between the signal side $B^0$ candidate and the tag side decay times. The measured lifetime is $\tau_{B^0} = 1.48 \pm 0.28 \pm 0.06 $ ps, where the first uncertainty is statistical and the second is systematic.
- 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
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- V Aulchenko
- T Aushev
- V Aushev
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- Autoren-URL
- http://arxiv.org/abs/2005.07507v2
- Schlüsselwörter
- hep-ex
- hep-ex
- Notes
- 16 pages, 5 figures
- Datum der Veröffentlichung
- 2020
- Datum der Datenerfassung
- 2020
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2020
- Titel
- Measurement of the $B^0$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset
Files
2005.07507v2.pdf
Datenquelle: arXiv
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