Published April 1, 2005
| Version v1
Journal article
Effects of instanton induced interactions on pentaquarks
- 1. Japan College of Social Work, Kiyose 204-8555 (Japan)
- 2. Department of Physics, H-27, Tokyo Institute of Technology, Meguro, Tokyo 152-8551 (Japan)
Description
Roles of instanton induced interactions (III) in the masses of pentaquark baryons, Θ+ (J=1/2 and 3/2) and Ξ--, and a dibaryon, H, are discussed using the MIT bag model. It is shown that the two-body terms in III give a strong attraction mainly due to the increase of the number of flavor antisymmetric quark pairs in multiquark systems. In contrast, the three-body u-d-s interaction is repulsive. It is found that III lowers the mass of negative-parity Θ+ as much as 100 MeV from the mass predicted by the bag model without III. We also consider possible quark model configurations for positive-parity Θ+ under III
Additional details
Identifiers
- DOI
- 10.1103/PhysRevD.71.074025;
- arXiv
- arXiv:hep-ph/0409103v1;
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 71
- Journal Issue
- 7
- Journal Page Range
- p. 074025-074025.9
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37023337
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BAG MODEL; DIBARYONS; FLAVOR MODEL; MASS FORMULAE; MEV RANGE; PARITY; PARTICLE INTERACTIONS; QUANTUM CHROMODYNAMICS; QUARKS; RESONANCE PARTICLES; REST MASS; THREE-BODY PROBLEM; TWO-BODY PROBLEM; XI MINUS PARTICLES
- Descriptors DEC
- BARYONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; ENERGY RANGE; EXTENDED PARTICLE MODEL; FERMIONS; FIELD THEORIES; HADRONS; HYPERONS; INTERACTIONS; MANY-BODY PROBLEM; MASS; MATHEMATICAL MODELS; PARTICLE MODELS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; QUARK MODEL; STRANGE PARTICLES; XI BARYONS; XI PARTICLES
Optional Information
- Notes
- (c) 2005 The American Physical Society