Article
Components of a chiral coefficient
Physical Review D
(1992)
Abstract
One of the coefficients that parametrizes the chiral Lagrangian of QCD is expressible in terms of a sum rule for which the integrand is known from experiment. We confront two model calculations of this coeScient with the behavior of the data. The model related to vector dominance reproduces the sumrule behavior very well, whereas a one-loop chiral quark model calculation fails badly. The sum rule allows one to identify those ingredients which are needed to make the quark method more realistic.Â
Disciplines
Publication Date
1992
Citation Information
John Donoghue and Barry Holstein. "Components of a chiral coefficient" Physical Review D Vol. 46 (1992) Available at: http://works.bepress.com/john_donoghue/104/