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Studying Possible Anomalous Top-Quark Couplings at Photon Colliders

Bohdan Grzadkowski·Zenro Hioki·Kazumasa Ohkuma·Jose Wudka
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Abstract

Search for new-physics through possible anomalous t tbar gamma, tbW and gamma gamma H couplings which are generated by SU(2) X U(1) gauge-invariant dimension-6 effective operators is discussed, using energy and angular distributions of final charged-lepton/ b-quark in gamma gamma -> t tbar -> l X / bX for various beam polarizations. Optimal beam polarizations that minimize uncertainty in determination of those non-standard couplings are found performing an optimal-observable analysis.

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Bohdan Grzadkowski, Zenro Hioki, Kazumasa Ohkuma, Jose Wudka. 2005-11-15. Studying Possible Anomalous Top-Quark Couplings at Photon Colliders. https://arxiv.org/abs/hep-ph/0511038

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