Prediction of a missing higher charmonium around 4.26 GeV in J/ψ family

He, Li-Ping (Research Center for Hadron and CSR Physics, Institute of Modern Physics of CAS, Lanzhou University, 730000, Lanzhou, China) (School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, China) ; Chen, Dian-Yong (Research Center for Hadron and CSR Physics, Institute of Modern Physics of CAS, Lanzhou University, 730000, Lanzhou, China) (Nuclear Theory Group, Institute of Modern Physics of CAS, 730000, Lanzhou, China) ; Liu, Xiang (Research Center for Hadron and CSR Physics, Institute of Modern Physics of CAS, Lanzhou University, 730000, Lanzhou, China) (School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, China) ; Matsuki, Takayuki (Tokyo Kasei University, 1-18-1 Kaga, 173-8602, Itabashi, Tokyo, Japan) (Theoretical Research Division, Nishina Center, RIKEN, 351-0198, Saitama, Japan)

11 December 2014

Abstract: Inspired by the similarity between the mass gaps of the J/ψ and Υ families, the prediction of a missing higher charmonium with mass 4,263 MeV and very narrow width is made. In addition, the properties of two charmonium-like states, X(3940) and X(4160) , and charmonium ψ(4415) are discussed, where our calculation shows that X(3940) as ηc(3S) is established, while the explanation of X(4160) to be ηc(4S) is fully excluded and that ηc(4S) is typically a very narrow state. These predictions might be accessible at BESIII, Belle, and BelleII in near future.


Published in: EPJC 74 (2014) 3208
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-014-3208-5
License: CC-BY-3.0



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