Meson-baryon coupling constants from QCD sum rules

Journal Article · Fri May 06 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1932940· OSTI ID:20718960

Erkol, G; Timmermans, R G.E. ^[1]; Rijken, Th A ^[2]

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1. Theory Group, KVI, University of Groningen, Zernikelaan 25, 9747 AA Groningen (Netherlands)
2. Institute for Theoretical Physics, University of Nijmegen, Nijmegen (Netherlands)

The QCD Sum Rules method which links the hadronic degrees of freedom with the underlying QCD parameters, serves as a very useful tool to extract qualitative and quantitative information about hadron properties. The QCD sum rules method has been extensively used to investigate the meson-baryon couplings, especially the pseudoscalar meson-nucleon case where the calculations of the pion-nucleon coupling constant reproduce the empirical value fairly well. In this work, the meson baryon coupling constants are analyzed using QCD sum rules method, with an emphasis on the scalar meson-nucleon interactions which play an important role in one boson exchange (OBE) models of nucleon-nucleon (NN) and hyperon-nucleon (YN) interactions. The coupling constants obtained are compared with the results of Nijmegen NN potential model.

• OSTI ID: 20718960
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 768; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COUPLING CONSTANTS
DEGREES OF FREEDOM
HYPERONS
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
OBE MODEL
PION-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
SCALAR MESONS
SUM RULES