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Isoscalar axial-vector renormalization constant and polarized proton structure function

Sourendu, Gupta and Murthy, MVN and Pasupathy, J (1989) Isoscalar axial-vector renormalization constant and polarized proton structure function. In: Physical Review D – Particles and Fields, 39 (9). 2547 -2549.

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Official URL: http://prd.aps.org/abstract/PRD/v39/i9/p2547_1


The isoscalar axial-vector renormalization constant is reevaluated using the QCD sum-rule method. It is found to be substantially different from the anomaly-free octet axial-vector u¯γμγ5+d¯γμγ5-2s¯γμγ5 coupling. Combining this determination with the known values of the isovector coupling GA and the F/D ratio for the octet current, we find the integral of the polarized proton structure function to be Gp=Fgp1(x)dx=0.135, in agreement with recent measurement by the European Muon Collaboration.

Item Type: Journal Article
Publication: Physical Review D – Particles and Fields
Publisher: The American Physical Society
Additional Information: Copyright 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: 19 Aug 2010 13:07
Last Modified: 19 Sep 2010 06:14
URI: http://eprints.iisc.ac.in/id/eprint/31457

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