Abstract
The photoproduction reaction of is investigated based on an effective Lagrangian approach at the tree-level approximation with the purpose of understanding the reaction mechanism and extracting the resonance contents and the associated resonance parameters in this reaction. Apart from the -channel and exchanges, -channel nucleon () exchange, -channel , and exchanges, and generalized contact term, the exchanges of a minimum number of resonances in the channel are taken into account in constructing the reaction amplitudes to describe the experimental data. It is found that by introducing the resonance exchange in the channel, one can reproduce the most recent differential cross-section data from the CLAS Collaboration quite well. Further analysis shows that the cross sections of at high energies are dominated by the -channel exchange, while the contributions from the -channel and exchanges are rather significant to the cross sections in the near-threshold energy region. Predictions for the beam and target asymmetries for are given.
- Received 7 March 2020
- Accepted 11 February 2021
DOI:https://doi.org/10.1103/PhysRevC.103.025207
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society