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ATLAS sensitivity to Wtb anomalous couplings in top quark decays
Aguilar-Saavedra, J.A.; Carvalho, J.; Castro, N.; Onofre, A.; Veloso, F.Abstract We study the sensitivity of the ATLAS experiment to Wtb anomalous couplings in top pair production with semileptonic decay, pp?tt̄?W+bW-b̄ with one of the W bosons decaying leptonically and the other hadronically. Several observables are examined, including the W helicity fractions and new quantities recently introduced, such as the ratios of helicity fractions and some angular asymmetries d...
Probing anomalous Wtb couplings in top pair decays
Aguilar-Saavedra, J.A.; Carvalho, J.; Castro, N.; Onofre, A.; Veloso, F.Abstract We investigate several quantities, defined in the decays of top quark pairs, which can be used to explore non-standard Wtb interactions. Two new angular asymmetries are introduced in the leptonic decay of top (anti)quarks. Both are very sensitive to anomalous Wtb couplings, and their measurement allows for a precise determination of the W helicity fractions. We also examine other angular and energy as...
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