Reaction p p r arrow. Lambda. Lambda. in the meson-exchange picture

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.45.931· OSTI ID:7048482

Haidenbauer, J ^[1]; Hippchen, T; Holinde, K; Holzenkamp, B; Mull, V; Speth, J ^[2]

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1. Institut fuer Kernphysik, Forschungszentrum Juelich GmbH, D-5170 Juelich (Germany) Department of Physics and Mathematical Physics, The University of Adelaide, Adelaide, South Australia 5001 (Australia)
2. Institut fuer Kernphysik, Forschungszentrum Juelich GmbH, D-5170 Juelich (Germany)

A study of the strangeness production process {ital {bar p}p}{r arrow}{bar {Lambda}}{Lambda} at threshold and intermediate energies has been performed doing a full coupled-channel ({ital {bar p}p},{bar {Lambda}}{Lambda}) calculation. The elastic part of the {ital {bar p}p} and {bar {Lambda}}{Lambda} interactions has been derived from a one-boson-exchange version of the Bonn {ital NN} potential and a corresponding extension to the hyperon-nucleon case whereas the annihilation part is taken into account by introducing suitable optical potentials. The transition interaction between {ital {bar p}p} and {bar {Lambda}}{Lambda} is based on {ital K}- and {ital K}{sup *}-meson exchange. A reasonably good description of empirical cross sections as well as polarization data is achieved. It is demonstrated that the results are quite sensitive even to short-range modifications of the channel interactions. We also compare our model with other approaches and suggest a new experiment which would be able to check the very different predictions of the meson-exchange and constituent quark model, respectively.

• OSTI ID: 7048482
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 45:3; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

662340* -- Hadron Interactions-- (1992-)
663430 -- Nucleon-Induced Reactions & Scattering-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BARYONS
BOSON-EXCHANGE MODELS
BOSONS
COUPLED CHANNEL THEORY
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INTERACTIONS
KAONS
LAMBDA BARYONS
LAMBDA PARTICLES
MATHEMATICAL MODELS
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERIPHERAL MODELS
POTENTIALS
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES