%0 Journal Article
%T Lattice study on $¦Ç_{c2}$ and X(3872)
%A Yi-Bo Yang
%A Ying Chen
%A Long-Cheng Gui
%A Chuan Liu
%A Yu-Bin Liu
%A Zhaofeng Liu
%A Jian-Ping Ma
%A Jian-Bo Zhang
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevD.87.014501
%X 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 charmonium $\psi(3770)$ and in agreement with quark model predictions. The transition width of $\eta_{c2}\to \gamma J/\psi$ is also obtained with a value $\Gamma=3.8(9)$ keV. Since the possible $2^{-+}$ assignment to X(3872) has not been ruled out by experiments, our results help to clarify the nature of X(3872).
%U http://arxiv.org/abs/1206.2086v2