Determination of theΛmagnetic moment by QCD sum rules
- 1 September 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 36 (5), 1442-1450
- https://doi.org/10.1103/physrevd.36.1442
Abstract
The magnetic moment of the Λ hyperon is calculated using the QCD sum-rule approach of Ioffe and Smilga. It is shown that has the structure =(2/3(++)(eħ/c)(1+), where is small. In deriving the sum rules special attention is paid to the strange-quark mass-dependent terms and to several additional terms not considered in earlier works. These terms are now appropriately incorporated. The sum rule is analyzed using the ratio method. Using the external-field-induced susceptibilities determined earlier, we find that the calculated value of is in agreement with experiment.
Keywords
This publication has 7 references indexed in Scilit:
- Gluon-field contribution in QCD sum rules for the magnetic moments of the nucleonsPhysical Review D, 1987
- Update on the determination of baryon magnetic moments by the QCD sum-rule methodPhysical Review D, 1987
- Determination of baryon magnetic moments from QCD sum rulesPhysical Review D, 1986
- Wilson's operator expansion: Can it fail?Nuclear Physics B, 1985
- Nucleon magnetic moments and magnetic properties of the vacuum in QCDNuclear Physics B, 1984
- Hyperon magnetic moments in QCDPhysics Letters B, 1983
- Proton and neutron magnetic moments from QCD sum rulesPhysics Letters B, 1983