Possible heavy molecular states composed of a pair of excited charm-strange mesons

Bin Hu, Xiao-Lin Chen, Zhi-Gang Luo +4

The P-wave charm-strange mesons $D_{s0}(2317)$ and $D_{s1}(2460)$ lie below the $DK$ and $D^{\ast }K$ threshold respectively. They are extremely narrow because their strong decays vi…