Lattice study on ${\eta }_{c2}$ and X(3872)

Yi-Bo Yang, Ying Chen, Long-Cheng Gui +5

Properties of $2^{-+}$ charmonium ${\eta }_{c2}$ are investigated in quenched lattice QCD. The mass of ${\eta }_{c2}$ is determined to be 3.80(3) GeV, which is close to the mass of $D$-wave ch…