Theoretical energy distributions around threshold from coherent pion production

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.881· OSTI ID:6991722

Deutchman, P A ^[1]

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1. Physics Department, University of Idaho, Moscow, Idaho 83843 (United States)

Detailed energy distributions have been calculated for exclusive [pi][sup 0] production in C+C collisions below and above threshold. The quantum-coherent, microscopic, many-body formalism used previously has been extended to include the [rho]-exchange as well as the [pi]-exchange interaction modified to produce nucleon isobars in the intermediate nuclear states. Analytic solutions to the [Delta]-hole and particle-hole coefficients using the degenerate, schematic-model approximation are used where collective-coherent, spin-isospin giant resonances are assumed for the nuclear excited states. The nuclear form factors that depend on these coefficients are solved analytically and become sums of degenerate [Delta]-hole and particle-hole states for given multipole angular momentum values of the excited nuclei. Also, in this approach, the overall amplitudes and differential cross sections for [pi][sup 0] production in either nucleus have been formally solved and the first numerical results of the pion, kinetic-energy distributions are presented.

• OSTI ID: 6991722
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSON-EXCHANGE MODELS
BOSONS
CALCULATION METHODS
CARBON 12 REACTIONS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
COLLECTIVE EXCITATIONS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCLUSIVE INTERACTIONS
GIANT RESONANCE
HADRONS
HEAVY ION REACTIONS
INTERACTIONS
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MESONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PERIPHERAL MODELS
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
RESONANCE
TARGETS