Chi c meson (${\chi }_{cJ}$)

The spin-triplet P-wave charmonium multiplet $1{}^3{P}_J$, with $J=0,1,2$ and $J^{PC}=0^{++},1^{++},2^{++}$. Radiative cascades between S-wave vector mesons and these states generate bands in three-body Dalitz plots.