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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Abstract

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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