Effects of Top-Quark Anomalous Decay Couplings at γγColliders

Abstract

Most general tbW couplings were investigated in the process γγ-> ttbar -> l^{+-} X for unpolarized photon beams. The double angular and energy distribution of the lepton was calculated and an optimal-observable analysis on it was carried out for the SM ttbar production mechanism. It was also shown that the leptonic angular distribution is insensitive to non-standard tbW vertex. That means that observation of non-standard effects indicates existence of some new physics in the production part.

3 pages, no figure, Latex, presented at the 5th KEK Topical Conference(KEKTC5), to be publised in the proceedings

References in corpus (4)

• CP Violation in Top Physics
• New Hints for Testing Anomalous Top-Quark Interactions at Future Linear Colliders
• Optimal-Observable Analysis of the Angular and Energy Distributions for Top-Quark Decay Products at Polarized Linear Colliders
• Production of Scalar Higgs and Pseudoscalar Higgs in Multi-Higgs Doublet Models at $\gamma \gamma$ Colliders

Cited by in corpus (10)

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• Study of CP Property of the Higgs at a Photon Collider using $\gamma \gamma \to t\bar{t}\to lX$
• Top polarisation studies in $H^{-}t$ and $Wt$ production
• Probing anomalous tbW couplings in single-top production using top polarization at the Large Hadron Collider
• Top Polarization in Stop Production at the LHC
• Model-independent analysis of Higgs spin and CP properties in the process $e^{+}{e}^{-}\to t\bar{t}\Phi$
• Measuring the charged Higgs mass and distinguishing between models with top-quark observables
• Tagging a Boosted Top quark with a $\tau$ final state