Nucleon and Δ resonances in K Σ ( 1385 ) photoproduction from nucleons
2008; American Institute of Physics; Volume: 77; Issue: 4 Linguagem: Inglês
10.1103/physrevc.77.045204
ISSN1538-4497
AutoresYongseok Oh, Che Ming Ko, K. Nakayama,
Tópico(s)High-Energy Particle Collisions Research
ResumoThe reaction mechanisms for $K\ensuremath{\Sigma}(1385)$ photoproduction from the reaction $\ensuremath{\gamma}p\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\Sigma}}^{0}(1385)$ in the resonance energy region are investigated in a hadronic model. Both contributions from $N$ and \ensuremath{\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 $K\ensuremath{\Sigma}(1385)$ 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 $\ensuremath{\gamma}p\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\Sigma}}^{0}(1385)$ 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 $\ensuremath{\Delta}(2000){F}_{35},\ensuremath{\Delta}(1940){D}_{33}$, and $N(2080){D}_{13}$, as well as the missing resonance $N{\frac{3}{2}}^{\ensuremath{-}}(2095)$ predicted in the quark model. Predictions on the differential cross section and photon asymmetry in this reaction are also given.
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