The $B(B_s)\to D_{(s)} P$, $D_{(s)} V$, $D_{(s)}^{*}P$ and $D_{(s)}^{*}V$ decays in the perturbative QCD approach

TL;DR

This paper uses perturbative QCD to analyze various two-body non-leptonic charmed B decays, providing branching ratios, testing D meson wave functions, and predicting polarization fractions with good agreement to existing data.

Contribution

It offers a comprehensive pQCD analysis of multiple B decay channels, including wave function testing and polarization predictions, with most results matching experimental data.

Findings

Branching ratios mostly agree with experiments.

Predicted $B_s$ decay rates can be tested in future experiments.

Correct relative strong phase $a_2/a_1$ obtained from calculations.

Abstract

Two-body non-leptonic charmed decays $B_{(s)} \to D_{(s)}P$, $D_{(s)}^*P$, $D_{(s)}V$ and $D_{(s)}^*V$ are analyzed in perturbative QCD approach, where $P$ and $V$ denote the light pseudoscalar meson and vector meson, respectively. We test the $D$ meson wave function by a $\chi^2$ fit with experimental data of six $B\to DP$ channels. We give the branching ratios of all the charmed B decay channels, most of which agree with experiments amazingly well. The predicted $B_s$ decays can be confronted with the future experimental data. By straightforward calculations, our pQCD approach gives the right relative strong phase of $a_2/a_1$ with experiments. We also predict the percentage of transverse polarizations in $B_{(s)} \to D^* V$ decay channels.