Takeuchi, TatsuGoonetileke, L. C.Ignjatovic, S. R.Wijewardhana, L. C. R.2016-10-182016-10-181997http://hdl.handle.net/10919/73258In Nucl. Phys. B391 (1993) 127, the value of the oblique correction parameter S for walking technicolor theories was estimated using a technique called Analytic Continuation by Duality (ACD). We apply the ACD technique to the perturbative vacuum polarization function and find that it fails to reproduce the well known result S=1/6\pi. This brings into question the reliability of the ACD technique and the ACD estimate of S.In Copyrighthep-phArticle - Refereed