Short range exchange contributions to the cross section for [ital pp][r arrow][ital pp][pi][sup 0] near threshold

Journal Article · Mon Apr 12 04:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.2237· OSTI ID:6644850

Lee, T H; Riska, D O ^[1]

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1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843 (United States) Department of Physics, University of Helsinki, 00170 Helsinki (Finland)

The nuclear [ital S]-wave pion production is described by the axial charge density operator of the two-nucleon systen. It is shown that the short range axial exchange charge operator implied by the nucleon-nucleon interaction enhances the predicted cross section for the reaction [ital pp][r arrow][ital pp][pi][sup 0] near threshold by factors 3--5. This suffices to explain most of the underprediction obtained with the single-nucleon and [ital S]-wave pion rescattering operator. The result implies that the cross section for [ital pp][r arrow][ital pp][pi][sup 0] can provide direct information on the short range components of the nucleon-nucleon interaction.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6644850
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:15; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSONS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FORM FACTORS
FUNCTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOSPIN
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PIONS NEUTRAL
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
RESCATTERING
S WAVES
SCATTERING
WAVE FUNCTIONS