SMEFT sensitivities to anomalous WWV couplings at a 3 TeV e+e- collider are improved by 1 to 2 orders of magnitude over LHC limits when using optimal observables and W helicity selection.
Optimal-Observable Analysis of Possible New Physics Using the b-quark in gamma gamma -> tt -> bX
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abstract
We study possible anomalous top-quark couplings generated by SU(2) x U(1) gauge invariant dimension-6 effective operators, using the final b-quark momentum distribution in gamma gamma -> tt -> bX. Taking into account non-standard tt gamma, tbW and gamma gamma H couplings, we perform an optimal-observable analysis in order to estimate the precision for the determination of all relevant non-standard couplings.
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Optimal sensitivity of anomalous charged triple gauge couplings through $W$ boson helicity at the $e^+e^-$ colliders
SMEFT sensitivities to anomalous WWV couplings at a 3 TeV e+e- collider are improved by 1 to 2 orders of magnitude over LHC limits when using optimal observables and W helicity selection.