$\bar B^0$ decay into $D^0$ and $f_0(500)$, $f_0(980)$, $a_0(980)$, $\rho$ and $\bar B^0_s$ decay into $D^0$ and $\kappa(800)$, $K^{*0}$

TL;DR

This paper predicts ratios of branching fractions for specific B meson decays into scalar mesons using the chiral unitary approach, providing parameter-free predictions and comparing them with experimental data where available.

Contribution

It introduces a parameter-free method based on the chiral unitary approach to predict B meson decay ratios into scalar mesons, enhancing understanding of scalar resonance production.

Findings

Predicted decay rate ratios for B meson decays into scalar mesons.

Compared scalar resonance production with vector meson channels.

Provided predictions consistent with available experimental data.

Abstract

We make predictions for ratios of branching fractions of $\bar B^0$ decays into $D^0$ and the scalar mesons $f_0(500)$, $f_0(980)$, $a_0(980)$, plus $\bar B^0_s$ decay into $D^0$ and $\kappa(800)$. We also compare the $\pi^+ \pi^-$ production in the scalar channel with that observed in the $\rho$ channel and make predictions for the $\bar B^0_s$ decay into $D^0$ and $K^*(892)$, comparing the strength of this channel with that of $\kappa(800)$ production. The work is based on results of the chiral unitary approach where the scalar resonances are generated from the pseudoscalar-pseudoscalar interaction. Up to an arbitrary normalization, the mass distributions and rates for decays into the scalar resonances are predicted with no free parameters. Comparison with experimental data is done when available.