title: X(3915) and X(4350) as new members in the P-wave charmonium family.
abstract: The analysis of the mass spectrum and the calculation of the strong decay of P-wave charmonium states strongly purport to explain the newly observed X(3915) and X(4350) as new members in the P-wave charmonium family, i.e., chi{c0}{'} for X(3915) and chi{c2}{''} for X(4350). Under the P-wave charmonium assignment to X(3915) and X(4350), the J{PC} quantum numbers of X(3915) and X(4350) must be 0{++} and 2{++} respectively, which provide important criteria to test the P-wave charmonium explanation for X(3915) and X(4350) proposed by this Letter. The decay behavior of the remaining two P-wave charmonium states with the second radial excitation is predicted, and an experimental search for them is suggested.
authors.affiliation: School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China. xiangliu@lzu.edu.cn
authors.forename: Xiang
authors.initials: X
authors.lastname: Liu
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Luo
authors.forename: Zhi-Feng
authors.initials: ZF
authors.lastname: Sun