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Search for anomalous Wtb couplings in single top quark production in ppbar collisions at sqrt(s) = 1.96 TeV

Research output: Contribution to journalJournal article

Published

<mark>Journal publication date</mark>14/02/2012
<mark>Journal</mark>Physics Letters B
Issue1-2
Volume708
Number of pages6
Pages21-26
<mark>Original language</mark>English

Abstract

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.

Bibliographic note

Submitted to Phys. Lett. B