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.
PDF
isos.pdf - Published Version Restricted to Registered users only Download (474kB) | Request a copy |
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 |
Actions (login required)
View Item |