$τ$ lepton mass measurement at Belle II
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- Zeitschriftenaufsatz
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- Abstract
- The reconstruction of tau-pair production, $e^{+}e^{-} \to \tau^{+}\tau^{-}$, from the subsequent 3-prong ($\tau^{+} \rightarrow \pi^{+} \pi^{-} \pi^{+} \bar{\nu}_{\tau}$) and 1-prong ($\tau^{-} \to \ell^{-} \bar{\nu}_{\ell} \nu_{\tau}$, $\tau^{-} \to h^{-} \nu_{\tau}$ or $\tau^{-} \to \pi^{-} \pi^0 \nu_{\tau}$) decays, is presented using 8.8 fb$^{-1}$ of $e^{+}e^{-}$ collision data of Belle II at the center-of-mass energy $\sqrt{s} = m_{\Upsilon(4S)}$. The pseudomass technique developed by the ARGUS experiment is used to measure the $\tau$-lepton mass $m_{\tau}$ in the 3-prong $\tau^{+} \to \pi^{+} \pi^{-} \pi^{+} \bar{\nu}_{\tau} $ decay, resulting in $m_{\tau} = 1777.28 \pm 0.75~{\rm (stat.)} \pm 0.33 ~{\rm (sys.)}~{\rm{MeV}/\rm{c}^2}$.
- 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
- 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
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- T Bilka
- S Bilokin
- D Biswas
- A Bobrov
- A Bondar
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- M Campajola
- L Cao
- 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
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- V Zhilich
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- VI Zhukova
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- A Zupanc
- Autoren-URL
- http://arxiv.org/abs/2008.04665v3
- Schlüsselwörter
- hep-ex
- hep-ex
- Datum der Veröffentlichung
- 2020
- Datum der Datenerfassung
- 2020
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2020
- Titel
- $τ$ lepton mass measurement at Belle II
Files
2008.04665v3.pdf
Datenquelle: arXiv
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