Prediction of a missing higher charmonium around 4.26 GeV in family Li-Ping He, Dian-Yong Chen, Xiang Liu and Takayuki Matsuki Eur. Phys. J. C, 74 12 (2014) 3208 Published online: 11 December 2014 DOI: 10.1140/epjc/s10052-014-3208-5