2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43571We performed an analysis on possible anomalous top-quark couplings generated by SU(2) x U(1) gauge-invariant dimension-6 effective operators, applying the optimal-observable procedure to the final lepton/b-quark momentum distribution in gamma gamma --> t tbar --> l X/b X. We studied how many such anomalous coupling constants could be determined altogether through these distributions.LaTeX, 5 pages. Talk at International Workshop on Physics and Experiments with Future Electron-Positron Linear Colliders (LCWS2004), April 19-23, 2004, Le Carre des Sciences, Paris, FranceHigh Energy Physics - Phenomenologytext