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arXiv · 0812.1643

The Top Quark Decay Vertex in Standard Model Extensions

Werner Bernreuther·Patrick Gonzalez·Martin Wiebusch
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Abstract

New physics interactions can affect the strength and structure of the $tbW$ vertex. We investigate the magnitudes and phases of "anomalous" contributions to this vertex in a two-Higgs doublet and the minimal supersymmetric extension of the standard model, and in a top-color assisted technicolor (TC2) model. While the magnitudes of the anomalous couplings remain below 1 percent in the first two models, TC2 interactions can reduce the left-chiral coupling $f_L$ by several percent.

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Werner Bernreuther, Patrick Gonzalez, Martin Wiebusch. 2008-12-09. The Top Quark Decay Vertex in Standard Model Extensions. https://doi.org/10.1140/epjc%2Fs10052-009-0887-4

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