Possible Molecular States of $D^{(\ast )}{D}^{(\ast )}$ and $B^{(\ast )}{B}^{(\ast )}$ within the Bethe-Salpeter framework

Hong-Wei Ke, Xiao-Hai Liu, Xue-Qian Li

Recently the LHCb collaboration reported a new exotic state $T_{cc}^{+}$ which possesses $cc\bar{u}\bar{d}$ flavor structure. Since its mass is very close to the threshold of $D^0D^{*+…