Browsing by Author "Ignjatovic, S. R."

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    ACD estimation of the S-parameter revisited
    Ignjatovic, S. R.; Takeuchi, Tatsu; Wijewardhana, L. C. R. (Elsevier, 1997-05-29)
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    An evaluation of the analytic continuation by duality technique
    Takeuchi, Tatsu; Goonetileke, L. C.; Ignjatovic, S. R.; Wijewardhana, L. C. R. (1997)
    In 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.