Quasifree kaon photoproduction on nuclei

Journal Article · Sat Dec 01 04:00:00 EST 2001 · Nuclear Physics A

OSTI ID:833899

Lee, Frank; MART, T; Bennhold, Cornelius; Wright, Lester

Investigations of the quasifree reaction A({gamma}, K Y)B are presented in the distorted wave impulse approximation (DWIA). For this purpose, we present a revised tree-level model of elementary kaon photoproduction that incorporates hadronic form factors consistent with gauge invariance, uses SU(3) values for the Born couplings and uses resonances consistent with multi-channel analyses. The potential of exclusive quasifree kaon photoproduction on nuclei to reveal details of the hyperon-nucleus interaction is examined. Detailed predictions for the coincidence cross section, the photon asymmetry, and the hyperon polarization and their sensitivities to the ingredients of the model are obtained for all six production channels. Under selected kinematics these observables are found to be sensitive to the hyperon-nucleus final state interaction. Some polarization observables are found to be insensitive to distortion effects, making them ideal tools to search for possible medium modifications of the elementary amplitude.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 833899
• Report Number(s): JLAB-THY-01-62; DOE/ER/40150-2928; nucl-th/9907119
• Journal Information: Nuclear Physics A, Journal Name: Nuclear Physics A Journal Issue: 1-4 Vol. 695
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CROSS SECTIONS
FORM FACTORS
GAUGE INVARIANCE
HYPERONS
IMPULSE APPROXIMATION
KAONS
MODIFICATIONS
NUCLEI
PHOTONS
PHOTOPRODUCTION
POLARIZATION
PRODUCTION