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We attempt to explain the experimental sparsity of diquonia candidates given the theoretical abundance of such states. We do this by investigating the lowest-order contributions of such states as intermediates in {ital p{bar p}} scattering into exclusive baryon-antibaryon final states. We find that the contributions depend on the partial widths for the meson-meson decays of the diquonia, and that resonant effects can be easily made to disappear. We conclude that if the meson-meson widths of diquonia are larger than about 50 MeV, most of these states will be extremely difficult to observe in {ital p{bar p}} scattering, for instance. We note that diquonia may offer a convenient means of describing some aspects of the dynamics of baryon-antibaryon scattering.
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| Authors: |
Roberts, W.;
Silvestre-Brac, B.;
Gignoux, C. (Institut des Sciences Nucleaires, 53, avenue des Martyrs, 38026 Grenoble CEDEX, France (FR))
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| Publication Date: | 1990 Apr 01 |
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| OSTI Identifier: | 7187979 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Physical Review, D (Particles Fields); (USA); Journal Volume: 41:7 |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: Pages: 2258-2265 |
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| Other Number(s): | Journal ID: ISSN 0556-2821; CODEN: PRVDA |
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| Subject: | 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PROTON-ANTIPROTON INTERACTIONS; QUARK MODEL; QUARKONIUM; PARTICLE IDENTIFICATION; ANGULAR DISTRIBUTION; ANTIBARYONS; BARYONS; COLOR MODEL; CROSS SECTIONS; EIGENSTATES; SPIN; SU-2 GROUPS; SYMMETRY BREAKING; ANGULAR MOMENTUM; ANTIMATTER; ANTIPARTICLES; BARYON-BARYON INTERACTIONS; COMPOSITE MODELS; DISTRIBUTION; ELEMENTARY PARTICLES; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; LIE GROUPS; MATHEMATICAL MODELS; NUCLEON-ANTINUCLEON INTERACTIONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; SU GROUPS; SYMMETRY GROUPS |
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| Update Date: | 2009 Dec 17 |
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