2008/10/31 by F. Peñuñuri, F. Penunuri, F. Larios
Mathematics · Physics and Astronomy · #Algorithm #Black Holes and Theoretical Physics #Combinatorics #Feynman diagram #Geometry #Higgs boson #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Scalar (mathematics) #Vertex (graph theory) #hep-ph
paper · pdf · doi:10.1103/physrevd.79.015013
published as Phys.Rev.D79:015013,2009 · Version published in Phys. Rev. D79, 015013 (2009)
openalex publication_date 2009/01/23 · arxiv created 2009/02/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 f2R. The top's width and the W-boson helicity in the t\ensuremath→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 of the particles involved. Also, a complete and exact diagonalization (and normalization) of the scalar sector of the model is made.