Nucleon resonance production in the γppηϕ reaction

Fan, Jin-Quan (School of Science, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China) ; Chen, Shao-Fei (School of Science, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China) ; Liu, Bo-Chao (School of Science, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China)

11 February 2019

Abstract: In this work, we perform a study of nucleon resonance production in the γppηϕ reaction within an effective Lagrangian approach. In our model, we consider the excitation of the N*(1535), N*(1650), N*(1710), and N*(1720) in the intermediate state and the background term. We find that this reaction is dominated by the excitation of the N*(1535) in the near threshold region. Especially, we study the possible role of the scalar meson exchange in this reaction. It is found that the f0(980) exchange may give a significant contribution and the parity asymmetry can be used to identify its role in this reaction.


Published in: Physical Review C 99 (2019)
Published by: APS
DOI: 10.1103/PhysRevC.99.025203
arXiv: 1901.06223
License: CC-BY-4.0



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