Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-05-15
Phys.Rev.C74:035205,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 17 figures, REVTeX, 1 figure added, to appear in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.74.035205
The photoproduction reaction $\gamma N \to K K \Xi$ is investigated based on a relativistic meson-exchange model of hadronic interactions. The production amplitude is calculated in the tree-level approximation from relevant effective Lagrangians, whose (coupling constant) parameters are mostly fixed from the empirical data and/or quark models together with SU(3) symmetry considerations. Gauge invariance of the resulting amplitude is maintained by introducing the contact currents by extending the gauge-invariant approach of Haberzettl for one-meson photoproduction to two-meson photoproduction. The role of the intermediate low-lying hyperons and of the intermediate higher-mass hyperon resonances are analyzed in detail. In particular, the basic features of the production of $\Xi^-(1318)$ in $\gamma p \to K^+ K^+ \Xi^-$ and their possible manifestations in the forthcoming experimental data are discussed.
Haberzettl Helmut
Nakayama Kazunori
Oh Yongseok
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