Testing the light scalar meson as a non-$q\bar{q}$ state in semileptonic $D$ decays

Yu-Kuo Hsiao, Shu-Qi Yang, Wen-Juan Wei +1

While the light scalar mesons ($S_0$) are considered to be either ordinary $q\bar{q}$ or exotic tetraquark states, we investigate the semileptonic decays $D\to S_0{e}^{+}{\nu }_e$, by takin…