Antiproton-nucleus inelastic scattering and the spin-isospin dependence of the N anti N interaction
A general overview of the utility of antinucleon (anti N)-nucleus inelastic scattering studies is presented, emphasizing both the sensitivity of the cross sections to various components of the N anti N transition amplitudes and the prospects for the exploration of some novel aspects of nuclear structure. We start with an examination of the relation between NN and N anti N potentials, focusing on the coherences predicted for the central, spin-orbit and tensor components, and how these may be revealed by measurements of two-body spin observables. We next discuss the role of the nucleus as a spin and isospin filter, and show how, by a judicious choice of final state quantum numbers (natural or unnatural parity states, isospin transfer ..delta..T=0 or 1) and momentum transfer q, one can isolate different components of the N anti N transition amplitude. Various models for the N anti N interaction which give reasonable fits to the available two-body data are shown to lead to strikingly different predictions for certain spin-flip nuclear transitions. We suggest several possible directions for future anti N-nucleus inelastic scattering experiments at LEAR, for instance the study of spin observables which would be accessible with polarized anti N beams, charge exchange reactions, and higher resolution studies of the (anti p, anti p') reaction. We compare the antinucleon and the nucleon as a probe of nuclear modes of excitation. 34 refs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5858892
- Report Number(s):
- BNL-36234; CONF-850152-4; ON: DE85010546
- Resource Relation:
- Conference: 3. LEAR workshop, Tignes-Savoie, France, 19 Jan 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANTIPROTON REACTIONS
INELASTIC SCATTERING
NUCLEON-ANTINUCLEON INTERACTIONS
ISOSPIN
SPIN
CARBON 12
CARBON 12 TARGET
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
LEAR
MOMENTUM TRANSFER
NUCLEAR STRUCTURE
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
OBE MODEL
POLARIZED BEAMS
SPIN FLIP
ANGULAR MOMENTUM
ANTINUCLEON REACTIONS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BEAMS
BOSON-EXCHANGE MODELS
CARBON ISOTOPES
EVEN-EVEN NUCLEI
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
POTENTIALS
SCATTERING
STABLE ISOTOPES
STORAGE RINGS
TARGETS
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