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arXiv · 0810.4545

tbW vertex in the Littlest Higgs Model with T-parity

F. Penunuri·F. Larios
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Abstract

A study of the effective tbW vertex is done in the littlest Higgs model with T parity that includes the one loop induced weak dipole coefficient f_{2R}. The top's width, the W-boson helicity in the t-> bW^+ decay as well as the t-channel and the s-channel modes of single top quark production at the LHC are then obtained for the tbW coupling. Our calculation is done in the Feynman-'t Hooft gauge, and we provide details of the analysis, like exact formulas (to all orders of the expansion variable v/f) of masses and mixing angles of all the particles involved. Also, a complete and exact diagonalization (and normalization) of the scalar sector of the model is made.

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F. Penunuri, F. Larios. 2009-02-12. tbW vertex in the Littlest Higgs Model with T-parity. https://doi.org/10.1103/physrevd.79.015013

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