Article ID Journal Published Year Pages File Type
1846806 Nuclear Physics B - Proceedings Supplements 2009 4 Pages PDF
Abstract

Using recent precise hadronic τ-decay data on the V – A spectral function and general properties of QCD such as analyticity, the operator product expansion (OPE) and chiral perturbation theory (χPT), we get accurate values for the QCD chiral order parameters and . At order p4 we obtain , whereas at order p6 we get and .

Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics