Investigating the Isospin Property of $T_{cc}^{+}$ from its Dalitz Plot Distribution

Jun Shi, Enke Wang, Qian Wang

Recently, LHCb observed a double-charmed tetraquark candidate $T_{cc}^{+}$ and claimed its isospin to be zero due to the absence of $T_{cc}^{++}$. However, the absence of the $T_{cc}…