Journal Article

PreJuSER-57142

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Photoproduction of Xi off nucleons

Nakayama, K.FZJ* ; Oh, Y. ; Haberzettl, H.

2006
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/10575  doi:10.1103/PhysRevC.74.035205

Abstract: The photoproduction reaction gamma N -> KK 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 -> K+K+Xi(-) and their possible manifestations in the forthcoming experimental data are discussed.

Keyword(s): photon nucleon: exclusive reaction ; K: pair production ; Xi: associated production ; amplitude analysis ; meson: exchange ; tree approximation ; effective Lagrangian ; symmetry: SU(3) ; channel cross section: energy dependence ; angular distribution ; baryon resonance: effect ; numerical calculations: interpretation of experiments ; photon nucleon --> Xi 2K

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2006
Notes: Nachtrag

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