Author
Erkol, Güray, Oka, M.
Publication Date
2009-06-01
Publication Place
-
American Physical Society
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
2-s2.0-67649862061
Record ID
066414f5-e9ac-4fcb-8754-a70b7d624928
Library Location
Natural and Mathematical Sciences
Date
2009-06-01
Notes
KAKENHI
Sample Text
We calculate the isoscalar axial-vector coupling constants of the Λ hyperon using the method of QCD sum rules. A determination of these coupling constants reveals the individual contributions of the u, d, and the s quarks to the spin content of Λ. Our results for the light-quark contributions are in agreement with those from experiment assuming flavor SU(3). We also find that the flavor-SU(3)-breaking effects are small and the contributions from the u and the d quarks to the Λ polarization are negatively polarized as in the flavor-SU(3) limit.
DOI
10.1103/PhysRevD.79.114028
Cilt
79
