Hypernuclear production by the ({gamma},K{sup +}) reaction within a relativistic model

Journal Article · Thu May 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.052201· OSTI ID:21189962

Shyam, R ^[1]; Lenske, H; Mosel, U ^[2]

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1. Saha Institute of Nuclear Physics, Kolkata (India)
2. Institute fuer Theoretische Physik, Universitaet Giessen, D-35292 Giessen (Germany)

Within a fully covariant model based on an effective Lagrangian picture, we investigate the hypernuclear production in a photon-nucleus interaction on an {sup 16}O target. The explicit kaon production vertex is described via creation, propagation, and decay into relevant channels of N*(1650), N*(1710), and N*(1720) intermediate baryonic resonance states in the initial interaction of the incident photon with one of the target protons. Bound state nucleon and hyperon wave functions are obtained by solving the Dirac equation. Using vertex parameters determined in the previous studies, contributions of the N*(1710) baryonic resonance dominate the total production cross sections which are found to peak at photon energies below 1 GeV. The results show that photoproduction is the most appropriate means for studying the unnatural parity hypernuclear states, thus accessing the spin dependence of the hyperon-nucleon interaction.

• OSTI ID: 21189962
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOUND STATE
CROSS SECTIONS
DECAY
DIRAC EQUATION
ENERGY LEVELS
HYPERONS
LAGRANGIAN FUNCTION
MEV RANGE
NUCLEON-HYPERON INTERACTIONS
OXYGEN 16 TARGET
PARITY
PHOTON-NUCLEON INTERACTIONS
PHOTONS
PHOTOPRODUCTION
PROTONS
RELATIVISTIC RANGE
RESONANCE
SPIN
WAVE FUNCTIONS