Abstract
Anomalous Wtb couplings modify the angular correlations of the top-quark decay products and change the single top-quark production cross section. We present limits on anomalous top-quark couplings by combining information from W boson helicity measurements in top-quark decays and anomalous coupling searches in the single top-quark final state. We set limits on right-handed vector couplings as well as left-handed and right-handed tensor couplings based on about 1 fb(-1) of data collected by the D0 experiment.
Highlights
18CEA, Irfu, SPP, Saclay, France 19IPHC, Universite Louis Pasteur, CNRS/IN2P3, Strasbourg, France 20IPNL, Universite Lyon 1, CNRS/IN2P3, Villeurbanne, France and Universitede Lyon, Lyon, France 21III
Anomalous Wtb couplings modify the angular correlations of the top-quark decay products and change the single top-quark production cross section
We present limits on anomalous top-quark couplings by combining information from W boson helicity measurements in top-quark decays and anomalous coupling searches in the single top-quark final state
Summary
This likelihood is combined with the result of the anomalous couplings search in the single top-quark final state in a Bayesian statistical analysis, yielding a two-dimensional posterior probability density as a function of both form factors.
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