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Universal Scale Factors Relating Mesonic Fields And Quark Operators, Amir H. Fariborz, Jason Ho, Tom G. Steele

Faculty Work Comprehensive List

Scale factor matrices relating mesonic fields in chiral Lagrangians and quark-level operators of QCD sum-rules are shown to be constrained by chiral symmetry, resulting in universal scale factors for each chiral nonet. Built upon this interplay between chiral Lagrangians and QCD sum-rules, the scale factors relating the a0 isotriplet scalar mesons to their underlying quark composite field were recently determined. It is shown that the same technique when applied to K∗0 isodoublet scalars reproduces the same scale factors, confirming the universality property and further validating this connection between chiral Lagrangians and QCD sum-rules which can have nontrivial impacts on our …