English

Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons

Nuclear Theory 2008-11-26 v2 High Energy Physics - Phenomenology

Abstract

The reaction mechanisms for KΣ(1385)K\Sigma(1385) photoproduction from the reaction γpK+Σ0(1385)\gamma p \to K^+\Sigma^{0}(1385) in the resonance energy region are investigated in a hadronic model. Both contributions from NN and Δ\Delta resonances of masses around 2 GeV as given in the Review of Particle Data Group and by the quark model predictions are included. The Lagrangians for describing the decays of these resonances into KΣ(1385)K\Sigma(1385) are constructed with the coupling constants determined from the decay amplitudes predicted by a quark model. Comparing the resulting total cross section for the reaction γpK+Σ0(1385)\gamma p \to K^+\Sigma^{0}(1385) with the preliminary data from the Thomas Jefferson National Accelerator Facility, we find that the most important contributions are from the two-star rated resonances Δ(2000)F35\Delta(2000) F_{35}, Δ(1940)D33\Delta(1940) D_{33}, and N(2080)D13N(2080) D_{13}, as well as the missing resonance N32(2095)N\frac32^-(2095) predicted in the quark model. Predictions on the differential cross section and photon asymmetry in this reaction are also given.

Keywords

Cite

@article{arxiv.0712.4285,
  title  = {Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons},
  author = {Yongseok Oh and Che Ming Ko and K. Nakayama},
  journal= {arXiv preprint arXiv:0712.4285},
  year   = {2008}
}

Comments

13 pages, 6 figures, REVTeX, to appear in Phys. Rev. C