Hypernuclear photoproduction

Journal Article · Sun May 15 04:00:00 EDT 1988 · Ann. Phys. (N.Y.); (United States)

DOI:https://doi.org/10.1016/0003-4916(88)90269-2· OSTI ID:7186158

Rosenthal, A S; Halderson, D; Hodgkinson, K; Tabakin, F

The nuclear (..gamma.., K/sup +/) reaction is studied using a distorted wave impulse approximation including the full Coulomb plus kaon--nucleus interaction. The need to include kaon--hypernucleus interaction effects, especially at higher energies, is demonstrated. The sensitivity of the hypernuclear cross sections to two alternate, viable descriptions of the basic photoproduction process is examined in detail. The basic photoproduction operators, including nonstatic terms, are examined. These nonstatic operators come into play to excite a richer spectrum of hypernuclear states as one goes beyond zero angle and threshold production. Hypernuclear wavefunctions, based on a phenomenological ..lambda.. nucleus interaction and including ..lambda.. continuum effects, are used to study the role of the associated form factors in determining the production cross sections for a variety of nuclear targets, and a range of angles and energies. Hypernuclear excitations other than spin--flip modes are then found to be significantly excited and kaon distortion effects are found to strongly alter the magnitude of the cross sections. Our conclusions are compared to those found by others in earlier investigations of this reaction. copyright 1988 Academic Press, Inc.

• Research Organization: Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008
• OSTI ID: 7186158
• Journal Information: Ann. Phys. (N.Y.); (United States), Journal Name: Ann. Phys. (N.Y.); (United States) Vol. 184:1; ISSN APNYA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
BARYONS
BOSONS
CARBON 12 TARGET
COULOMB FIELD
CROSS SECTIONS
DIAGRAMS
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
ELECTRIC FIELDS
ELEMENTARY PARTICLES
FERMIONS
FEYNMAN DIAGRAM
GAUGE INVARIANCE
HADRON-HADRON INTERACTIONS
HADRONS
HYPERNUCLEI
HYPERONS
IMPULSE APPROXIMATION
INTERACTIONS
INVARIANCE PRINCIPLES
KAON-NUCLEON INTERACTIONS
KAONS
KAONS PLUS
LAMBDA BARYONS
LAMBDA PARTICLES
LEAD 208 TARGET
LORENTZ INVARIANCE
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONUCLEAR REACTIONS
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
TARGETS
TRANSITION AMPLITUDES