The DMO Sum Rule Revisited

Abstract

We reconsider the DMO sum rule in light of our recent two-loop calculations of isospin and hypercharge vector and axialvector current propagators in chiral perturbation theory. A modified derivation valid to second order in the light quark masses is presented, and a phenomenological analysis yields determination of a combination of finite counterterms occurring in the p^4 and p^6 chiral lagrangians. Suggestions are given for further study.

8 pages, LaTeX, 1 table

References in corpus (4)

• Two-loop Analysis of Axialvector Current Propagators in Chiral Perturbation Theory
• Corrections to Sirlin's Theorem in $O(p^6)$ Chiral Perturbation Theory
• Chiral sum rules to second order in quark mass
• Vector and Axial-Vector Spectral Functions and QCD

Cited by in corpus (5)

• The Physics of Hadronic Tau Decays
• Finite Energy Chiral Sum Rules and Tau Spectral Functions
• $K_{\ell 4}$ Form-Factors and $\pi$-$\pi$ Scattering
• Two-loop Analysis of Axialvector Current Propagators in Chiral Perturbation Theory
• Two-point function of strangeness-carrying vector-currents in two-loop Chiral Perturbation Theory