Speaker
Eiasha Waheed
(High Energy Accelerator Research Organization (KEK))
Description
We report new results of the branching fractions $\mathcal{B}(\bar{B}^0\to D^{*+}\pi^{-})$ and $\mathcal{B}(\bar{B}^0\to D^{*+}K^{-})$ measured using $772\times 10^{6}$ $B$-meson pairs recorded by the Belle experiment. The ratio of the branching fractions is measured in a way that allows for the cancellation of systematic uncertainties arising from the $D$-meson reconstruction. Furthermore, we report a new high-precision test of QCD factorisation by measuring ratios of $\bar{B}^0\to D^{*+}h^{-}$ $(h=\pi,K)$ and $\bar{B}^0\to D^{*+}\ell^{-}\bar{\nu}_{\ell}$ decays at fixed momentum transfers for different particle species. The talk also covers related measurements of $B \to D h$ decays performed with the full Belle data.
First author | S. Nishida |
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shohei.nishida@kek.jp | |
Collaboration / Activity | Belle |
Primary author
Shohei Nishida
(BELLE (BELLE II Experiment))