Doubly charmed tetraquark $T_{cc}^{+}$ in (2+1)-flavor QCD near physical point

Yan Lyu, Sinya Aoki, Takumi Doi +3

We study the doubly charmed tetraquark state $T_{cc}^{+}$ by the HAL QCD method applied to the $D^{\ast }D$ system in $(2+1)$ flavor lattice QCD at nearly physical pion mass, $m_{\pi }=146$ Me…