Pion production: Where's the coherence

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.2794· OSTI ID:6462227

Deutchman, P A; Li, G Q ^[1]

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

Formal solutions to the [Delta]-hole and particle-hole coefficients describing nuclear coherent states are presented using the degenerate schematic model. These solutions are used to analytically solve for the momentum-dependent nuclear form factors in which the target is excited to a transition-spin-isospin, [Delta]-giant resonance through the creation of coherent [Delta]-hole states, whereas the projectile is excited to an ordinary spin-isospin giant resonance. The target then decays to its ground state emitting a pion. A more general model operator is proposed that leads to complete coherence for all momenta. The magnitudes of the nuclear form factors are calculated theoretically and the results coming from the completely coherent model are compared to the low-momentum coherent model. The calculation is then completed by introducing these models into the pion triple-differential cross section and energy distributions are calculated and compared. The importance of how the nuclear structure and coherence affect the magnitudes and shapes of the form factors and the pion-energy distributions is assessed.

• OSTI ID: 6462227
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663300* -- Nuclear Reactions & Scattering
General-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BOSONS
CHARGED-PARTICLE REACTIONS
COHERENT PRODUCTION
CROSS SECTIONS
DELTA BARYONS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
FERMIONS
FORM FACTORS
HADRONS
HEAVY ION REACTIONS
INTERACTIONS
MANY-BODY PROBLEM
MESONS
N BARYONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLES
PIONS
PSEUDOSCALAR MESONS
RESONANCE