Electromagnetic production of hypernuclei

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Int. J. Mod. Phys. A; (United States)

DOI:https://doi.org/10.1142/S0217751X89000029· OSTI ID:5812429

Cohen, J

The authors review the results of recent studies and calculations of /gamma/-hypernuclear excitations via electromagnetic probes (the (e,e'/Kappa//sup +/) and (/gamma/, /Kappa//sup +/) reactions). After discussing the importance of the problem, they present and analyze the theoretical features of a model (based upon Feynman diagrams) for studying the process. The special kinematics of the nuclear (e,e'/Kappa//sup +/) reaction, involving high momentum transfers, is discussed. They then present cross section calculations. Using first a nonrelativistic nuclear structure model, they present results for the exclusive and inclusive electromagnetic hypernuclear excitations and for a large range of nuclear masses. Next, the authors calculate cross sections using the fully-relativistic form of the transition operator and relativistic Dirac-nuclear-and hypernuclear-structure model. In this context, they analyze the effects of the large scalar and vector potentials of the relativistic model and of the Dirac-spinor wave functions of the proton and the /gamma/-hyperon, on the calculated quantity. The relativistic-model calculations are presented for both pseudoscalar (PS) and pseudovector (PV) KN /gamma/ vertex couplings and they discuss in detail the different theoretical predictions obtained in the two cases.

• Research Organization: Case Western Reserve Univ., Cleveland, OH (USA). Dept. of Physics
• OSTI ID: 5812429
• Journal Information: Int. J. Mod. Phys. A; (United States), Journal Name: Int. J. Mod. Phys. A; (United States) Vol. 4:1; ISSN IMPAE
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100 -- Particle Accelerators-- Design
Development
& Operation
645101 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYONS
BOSONS
CALCULATION METHODS
CHARGED-PARTICLE REACTIONS
COLLECTIVE ACCELERATORS
COUPLING
COUPLING CONSTANTS
CROSS SECTIONS
DATA
DECAY
ELECTROMAGNETIC PARTICLE DECAY
ELECTRON-POSITRON INTERACTIONS
ELECTRON-RING ACCELERATORS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
FEYNMAN PATH INTEGRAL
FUNCTIONS
HADRON REACTIONS
HADRONS
HYPERNUCLEI
HYPERONS
INFORMATION
INTEGRALS
INTERACTIONS
KAON PLUS REACTIONS
KAON REACTIONS
LAMBDA BARYONS
LAMBDA PARTICLES
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL MODELS
MESON REACTIONS
MESONS
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEI
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PROBES
PSEUDOSCALAR MESONS
PSEUDOVECTOR COUPLING
STRANGE PARTICLES
THEORETICAL DATA
WAVE FUNCTIONS