Kaon photoproduction off nucleons in the chiral quark model
1995; American Institute of Physics; Volume: 52; Issue: 3 Linguagem: Inglês
10.1103/physrevc.52.1648
ISSN1538-4497
Autores Tópico(s)Particle physics theoretical and experimental studies
ResumoIn this paper, we develop a general framework to study meson photoproduction off nucleons in the chiral quark model. The s- and u-channel resonance contributions are expressed in terms of the Chew-Goldberger-Low-Nambu (CGLN) amplitudes. The kaon-photoproduction processes, \ensuremath{\gamma}p\ensuremath{\rightarrow}${\mathit{K}}^{+}$\ensuremath{\Lambda}, \ensuremath{\gamma}p\ensuremath{\rightarrow}${\mathit{K}}^{+}$${\mathrm{\ensuremath{\Sigma}}}^{0}$, and \ensuremath{\gamma}p\ensuremath{\rightarrow}${\mathit{K}}^{0}$${\mathrm{\ensuremath{\Sigma}}}^{+}$, are calculated. The initial results show that the quark model provides a much improved description of the reaction mechanism for kaon photoproduction off the nucleon with less parameters than the traditional phenomenological approaches.
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