{phi} meson couplings to the nucleon and strange vector currents

Journal Article · Thu May 01 00:00:00 EDT 1997 · AIP Conference Proceedings

OSTI ID:678803

Meier, Ulf- G; Mull, V; Speth, J ^[1]; Van Orden, J W ^[2]

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1. FZ Juelich, IKP (Thailand), D-52425Juelich (Germany)
2. TJNAF, Newport News, Virginia23606 (United States)

We investigate within a meson-exchange model the OZI allowed coupling of the {phi} meson to the nucleon with the inclusion of kaon loops and hyperon excitations. All parameters of the model have previously been determined from a variety of hadronic reactions. A strong cancellation of the various contributions is observed which results in a small {phi}NN coupling. We also show that a realistic isoscalar spectral function including the correlated {pi}{rho} exchange leads to sizeably reduced strange vector form factors based on the dispersion-theoretical analysis of the nucleons{close_quote} electromagnetic form factors explaining our previous result. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 678803
• Report Number(s): CONF-970564-; ISSN 0094-243X; TRN: 99:009250
• Journal Information: AIP Conference Proceedings, Vol. 412, Issue 1; Conference: 6. conference on the intersections of particle and nuclear physics, Big Sky, MT (United States), 25 May - 2 Jun 1997; Other Information: PBD: May 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
MESON-NUCLEON INTERACTIONS
BOSON-EXCHANGE MODELS
PHI-1020 MESONS
STRANGENESS
NUCLEON-NUCLEON INTERACTIONS
FORM FACTORS