Tetraquark nature of the $a_0(980)$ meson in hadronic $D$ decays

Hai-Yang Cheng, Cheng-Wei Chiang, Fanrong Xu

The internal structure of the light scalar meson $a_0(980)$ is explored in the three-body $D$ decays of $D\to a_0(980)P\to P_1{P}_{2}P$ through the intermediate state $a_0(980)$, where…