Relativistic Love-Franey model: Covariant representation of the NN interaction for N-nucleus scattering

Journal Article · Mon Apr 01 04:00:00 EST 1985 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.31.1340· OSTI ID:6023746

Horowitz, C J

A Lorentz invariant form of the NN amplitude is fit with a simple model which includes direct and exchange first Born terms from a number of ''mesons.'' The (complex) couplings and nucleon-meson form factors are adjusted to fit the NN amplitudes directly without iteration. The resulting parameters agree well with one-boson-exchange potentials and have a systematic and small energy dependence. Detailed analytic representations of the relativistic NN amplitudes are provided at lab energies of 135, 200, and 400 MeV. The model separation of the NN amplitudes into direct and exchange contributions does not involve sensitive cancellations and is contrasted with the very different nonrelativistic results. The model amplitudes are used to construct optical potentials in a relativistic impulse approximation using both pseudovector and pseudoscalar ..pi..-N coupling. The pseudoscalar result reproduces earlier relativistic impulse approximation calculations which diverge at low energies, while the pseudovector results are nearly constant with energy and in good agreement with phenomenological potentials.

• Research Organization: Department of Physics, University of Colorado, Boulder, Colorado 80309 and Center for Theoretical Physics and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 6023746
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 31:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BOSON-EXCHANGE MODELS
BOSONS
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY RANGE
FIELD THEORIES
FORM FACTORS
GENERAL RELATIVITY THEORY
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
IMPULSE APPROXIMATION
INTERACTIONS
INVARIANCE PRINCIPLES
LORENTZ INVARIANCE
MATHEMATICAL MODELS
MESONS
MEV RANGE
MEV RANGE 100-1000
MOMENTUM TRANSFER
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
OBE MODEL
OPTICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
PHASE SHIFT
PIONS
POTENTIALS
PSEUDOSCALAR MESONS
RELATIVITY THEORY
SCATTERING AMPLITUDES