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The top-quark decay vertex in standard model extensions

Bernreuther, Werner ; González, Patrick ; Wiebusch, Martin

The European physical journal. C, Particles and fields, 2009-03, Vol.60 (2), p.197-211 [Periódico revisado por pares]

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Título:
The top-quark decay vertex in standard model extensions
Autor: Bernreuther, Werner ; González, Patrick ; Wiebusch, Martin
Assuntos: Astronomy ; Astrophysics and Cosmology ; Couplings ; Elementary Particles ; Exact sciences and technology ; Hadrons ; Heavy Ions ; Measurement Science and Instrumentation ; Nuclear Energy ; Nuclear Physics ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Quarks ; Regular Article - Theoretical Physics ; String Theory ; The physics of elementary particles and fields
É parte de: The European physical journal. C, Particles and fields, 2009-03, Vol.60 (2), p.197-211
Descrição: 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.
Editor: Berlin/Heidelberg: Springer-Verlag
Idioma: Inglês

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