skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Can four-quark states be easily detected in baryon-antibaryon scattering

Abstract

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.

Authors:
; ;  [1]
  1. Institut des Sciences Nucleaires, 53, avenue des Martyrs, 38026 Grenoble CEDEX, France (FR)
Publication Date:
OSTI Identifier:
7187979
Resource Type:
Journal Article
Journal Name:
Physical Review, D (Particles Fields); (USA)
Additional Journal Information:
Journal Volume: 41:7; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
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; 645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties

Citation Formats

Roberts, W, Silvestre-Brac, B, and Gignoux, C. Can four-quark states be easily detected in baryon-antibaryon scattering. United States: N. p., 1990. Web. doi:10.1103/PhysRevD.41.2258.
Roberts, W, Silvestre-Brac, B, & Gignoux, C. Can four-quark states be easily detected in baryon-antibaryon scattering. United States. https://doi.org/10.1103/PhysRevD.41.2258
Roberts, W, Silvestre-Brac, B, and Gignoux, C. 1990. "Can four-quark states be easily detected in baryon-antibaryon scattering". United States. https://doi.org/10.1103/PhysRevD.41.2258.
@article{osti_7187979,
title = {Can four-quark states be easily detected in baryon-antibaryon scattering},
author = {Roberts, W and Silvestre-Brac, B and Gignoux, C},
abstractNote = {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.},
doi = {10.1103/PhysRevD.41.2258},
url = {https://www.osti.gov/biblio/7187979}, journal = {Physical Review, D (Particles Fields); (USA)},
issn = {0556-2821},
number = ,
volume = 41:7,
place = {United States},
year = {Sun Apr 01 00:00:00 EST 1990},
month = {Sun Apr 01 00:00:00 EST 1990}
}