New directions for top quark polarization in the $t$-channel process

Abstract

We define three orthogonal axes to investigate the top quark polarization in the $t$-channel single top process. We provide expressions for the polarization in these axes in terms of anomalous $Wtb$ couplings. It is found that the polarizations in the two axes orthogonal to the spectator quark axis are very sensitive to an anomalous coupling involving a ${\bar{b}}_L{\sigma }^{\mu \nu }{t}_R$ dipole term. In particular, an asymmetry based on the polarization normal to the production plane is more sensitive to the imaginary part of this coupling than previously studied observables.

arXiv commentLaTeX 6 pages. Minor changes, matches published version

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Cited by in corpus (23)

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• $tbW$ Anomalous Couplings in the Two Higgs Doublet Model
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• Symbolic expressions for fully differential single top quark production cross section and decay width of polarized top quark in the presence of anomalous Wtb couplings
• Climbing to the Top of the ATLAS 13 TeV data
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