Strong decays of excited $2^{+}$ charmed mesons

Xiao-Ze Tan, Tianhong Wang, Yue Jiang +3

The new charmed resonance $D_2^{\ast }(3000)$ was observed by the LHCb Collaboration in $B$ decays. In this paper, by assigning it as four possible excited states of the $2^{+}$ fami…