Study light scalar meson property from heavy meson decays

Cai-Dian Lu, Wei Wang

In the SU(3) symmetry limit, the ratio $R\equiv \frac{\mathcal{B}(D^{+}\to f_0{l}^{+}\nu )+\mathcal{B}(D^{+}\to \sigma l^{+}\nu )}{\mathcal{B}(D^{+}\to a_0^0{l}^{+}\nu )}$ is equal to 1 if the scalar mesons are $\bar{q}q$…