Nucleon and resonances in photoproduction
Feb 11, 202012 pages
Published in:
- Phys.Rev.D 101 (2020) 7, 074025
- Published: Apr 21, 2020
e-Print:
- 2002.04213 [hep-ph]
DOI:
- 10.1103/PhysRevD.101.074025 (publication)
View in:
Citations per year
Abstract: (APS)
The photoproduction of γp→K+Σ0(1385) is investigated based on an effective Lagrangian approach using the tree-level Born approximation, with the purpose of understanding the reaction mechanisms and resonance contents and their associated parameters in this reaction. In addition to the t-channel K and K*(892) exchanges, s-channel nucleon (N) exchange, u-channel Λ exchange, and generalized contact term, the exchanges of a minimum number of N and Δ resonances in the s channel are taken into account in constructing the reaction amplitudes to describe the experimental data. It is found that the most recent differential cross-section data from the CLAS Collaboration can be well reproduced by including one of the N(1895)1/2-, Δ(1900)1/2-, and Δ(1930)5/2- resonances. The reaction mechanisms of γp→K+Σ0(1385) are discussed in detail, and the predictions of the beam and target asymmetries for this reaction are given. The cross sections of γp→K0Σ+(1385) are shown to be able to further constrain the theoretical models and pin down the resonance contents for γp→K+Σ0(1385).Note:
- 11 pages, 9 figures. Version published in PRD. arXiv admin note: text overlap with arXiv:1704.04562, arXiv:1810.07012
- Strong Interactions
- target: asymmetry
- photoproduction
- beam: asymmetry
- differential cross section
- effective Lagrangian
- Born approximation
- tree approximation
- Delta(1930)
- Delta(1900)
References(26)
Figures(12)
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