Publication Date
1995
Journal or Book Title
NUCLEAR PHYSICS B
Abstract
We perform a calculation of the isospin and hypercharge vector-current propagators (ΔV33μν(q2) and ΔV88μν(q2)) to two loops in chiral perturbation theory. The analysis is carried out with straight-forward Feynman diagram methods by making appropriate use of external vector sources. Counterterms from the (q6) chiral lagrangian, required to absorb divergences and scale dependence encountered at the two-loop level, are constructed. Our final results are finite, covariant, and scale-independent. Several applications are described, including a comparison of the two-loop isospin vector spectral function with data and the construction of new chiral sum rules.
Pages
373-404
Volume
447
Issue
2-3
Recommended Citation
Golowich, E and KAMBOR, J, "2-LOOP ANALYSIS OF VECTOR-CURRENT PROPAGATORS IN CHIRAL PERTURBATION-THEORY" (1995). NUCLEAR PHYSICS B. 484.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/484
Comments
This is the pre-published version achieved from ArXiv. The published version is located at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVC-3YS92BR-6C&_user=1516330&_coverDate=08%2F07%2F1995&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000053443&_version=1&_urlVersion=0&_userid=1516330&md5=495e15caefe0ee2ce2641d5e6f5dcabc&searchtype=a