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Lepton distribution as a probe of new physics in production and decay of the t quark and its polarization

Rohini M. Godbole·Saurabh D. Rindani·Ritesh K. Singh
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Abstract

We investigate the possibilities of studying new physics in various processes of t-quark production using kinematical distributions of the secondary lepton coming from decay of t quarks. We show that the angular distributions of the secondary lepton are insensitive to the anomalous tbW vertex and hence are pure probes of new physics in a generic process of t-quark production. The energy distribution of the lepton is distinctly affected by anomalous tbW couplings and can be used to analyze them independent of the production process of t quarks. The effects of t polarization on the distributions of the decay lepton are demonstrated for top-pair production process at a gamma-gamma collider mediated by a heavy Higgs boson.

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Rohini M. Godbole, Saurabh D. Rindani, Ritesh K. Singh. 2006-11-20. Lepton distribution as a probe of new physics in production and decay of the t quark and its polarization. https://doi.org/10.1088/1126-6708%2F2006%2F12%2F021

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