Combination Of Searches For Anomalous Top Quark Couplings With 5 4 Fb 1 Of P Bar P Collisions
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Search for Anomalous $Wtb$ Couplings in Single Top Quark Production in $p\bar{p}$ Collisions at $\sqrt{s}
We present new direct constraints on a general Wtb interaction using data corresponding to an integrated luminosity of 5.4 fb−1 collected by the D0 detector at the Tevatron p{bar p} collider. The standard model provides a purely left-handed vector coupling at the Wtb vertex, while the most general, lowest dimension Lagrangian allows right-handed vector and left- or right-handed tensor couplings as well. We obtain precise limits on these anomalous couplings by comparing the data to the expectations from different assumptions on the Wtb coupling.