https://doi.org/10.1140/epjc/s10052-016-4054-4
Regular Article - Theoretical Physics
Implication of the observed 
for studying the 
process
1
Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou, 730000, China
2
School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China
3
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
4
State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China
* e-mail: xiangliu@lzu.edu.cn
Received:
2
February
2016
Accepted:
30
March
2016
Published online:
9
April
2016
We study the charmonium 
reaction using the effective Lagrangian approach where the contributions from well-established 
states are considered, and all parameters are fixed in the process of 
at center of mass energy 
GeV. The experimental data on the line shape of the mass distribution of the 
can be well reproduced. Based on the study of , the total and differential cross sections of the reaction are predicted. At the same time we evaluated also the cross sections of the 
reaction. It is shown that the contribution of the nucleon pole to this reaction is largest close to the reaction threshold. However, the interference between nucleon pole and the other nucleon resonance can still change the angle distributions significantly. Those theoretical results may be tested by the future experiments at 
ANDA.
© The Author(s), 2016
