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Determination of the magnetic moment by QCD sum rules

Pasupathy, J and Singh, JP and Wilson, SL and Chiu, CB (1987) Determination of the magnetic moment by QCD sum rules. In: Physical Review D- Particles and Fields, 36 (5). 1442 - 1450.

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The magnetic moment of the Λ hyperon is calculated using the QCD sum-rule approach of Ioffe and Smilga. It is shown that μΛ has the structure μΛ=(2/3(eu+ed+4es)(eħ/2MΛc)(1+δΛ), where δΛ 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 μΛ is in agreement with experiment.

Item Type: Journal Article
Publication: Physical Review D- Particles and Fields
Publisher: The American Physical Society
Additional Information: copy right of this article belongs to The American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Centre for Theoretical Studies (Ceased to exist at the end of 2003)
Date Deposited: 03 Jul 2009 06:21
Last Modified: 19 Sep 2010 05:34
URI: http://eprints.iisc.ac.in/id/eprint/20789

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