Published December 5, 1994 | Version v1
Journal article Metadata-only

H dibaryon in the QCD sum rule

Creators

  • 1. Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152 (Japan)
  • 2. Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305 (Japan)

Description

The QCD sum rule is applied to the H dibaryon and is compared to the flavor non-singlet di-nucleon. We find that the H dibaryon is almost degenerate to the di-nucleon in the SU(3)flavor limit and therefore is not deeply bound as far as the threshold parameter is adjusted not to have a di-nucleon bound state. After introducing the SU(3)f breaking effects, the H dibaryon is found to be bound by 40 MeV below the ΛΛ threshold with ±70 MeV ambiguity due to the Borel mass choice. ((orig.))

Additional details

Publishing Information

Journal Title
Nuclear Physics. A
Journal Volume
580
Journal Issue
3
Journal Page Range
p. 445-454.
ISSN
0375-9474
CODEN
NUPABL

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
26022840
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ASYMPTOTIC SOLUTIONS; BINDING ENERGY; BOUND STATE; COUPLING CONSTANTS; DIBARYONS; FLAVOR MODEL; HYPERON-HYPERON INTERACTIONS; PARTICLE STRUCTURE; QUANTUM CHROMODYNAMICS; REST MASS; STRANGE PARTICLES; SU-3 GROUPS; SUM RULES; SYMMETRY BREAKING
Descriptors DEC
BARYON-BARYON INTERACTIONS; BARYONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; ENERGY; EQUATIONS; FERMIONS; FIELD THEORIES; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; LIE GROUPS; MASS; MATHEMATICAL MODELS; PARTICLE INTERACTIONS; PARTICLE MODELS; QUANTUM FIELD THEORY; QUARK MODEL; SU GROUPS; SYMMETRY GROUPS