Nucleon and Δ\Delta resonances in γpK+Σ0(1385)\gamma p \to K^+ \Sigma^0(1385) photoproduction

Feb 11, 2020
12 pages
Published in:
  • Phys.Rev.D 101 (2020) 7, 074025
  • Published: Apr 21, 2020
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DOI:

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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)