Measurement of the branching ratio of $B\rightarrow D^{(\ast)}\tau\nu_\tau$ relative to $B\rightarrow D^{(\ast)}\ell\nu_\ell$ decays with hadronic tagging at Belle
| Autor: | Huschle, Matthias |
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| Přispěvatelé: | Feindt, M. |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| DOI: | 10.5445/ir/1000046407 |
| Popis: | Using the full data sample on the $\Upsilon(4S)$ resonance of the Belle collaboration and a hadronic tagging method, I measure the relative semitauonic decay rates $R = 0.375^{+0.064}_{-0.063}\mathrm{(stat.)}\pm 0.026\mathrm{(syst.)}$ and $R^\ast = 0.293^{+0.039}_{-0.037}\mathrm{(stat.)}\pm 0.015\mathrm{syst.}$. These measured values are in good agreement with the theoretical expectations with a small excess. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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