PoS - Proceedings of Science
Volume 282 - 38th International Conference on High Energy Physics (ICHEP2016) - Quark and Lepton Flavor Physics
Measurement of the $B^0$$\rightarrow$$D^{∗−}$$\pi^+$$\pi^−$$\pi^+$ branching fraction by B A B AR
A. Lusiani
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Pre-published on: February 08, 2017
Published on: April 19, 2017
Abstract
The BaBar collaboration measured the decay branching fraction $\text{Br}(B^0 \to D^{*-} \pi^+ \pi^- \pi^+) = (7.26 \pm 0.11\,\text{(stat.)} \pm 0.31\,\text{(syst.)}) \times 10^{-3}$ using a sample of $(470.9 \pm 2.8) \times 10^6~B\overline{\kern -0.2em B}$ pairs. This measurement will facilitate the measurement of $\text{Br}(B^0 \to D^{*-} \tau^+ \nu_\tau)$ with $\tau^+ \to \pi^+ \pi^- \pi^+ \overline{\nu}_\tau$ at hadronic colliders, improving the experimental precision on the normalization branching fraction $\text{Br}(B^0 \to D^{*-} \pi^+ \pi^- \pi^+)$.
DOI: https://doi.org/10.22323/1.282.0572
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