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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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|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Centre for Theoretical Studies|
|Date Deposited:||19 Aug 2010 13:07|
|Last Modified:||19 Sep 2010 06:14|
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