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Helicity fractions of W bosons from top quark decays at NNLO in QCD

Decay rates of unpolarized top quarks into longitudinally and transversally polarized W bosons are calculated to second order in the strong coupling constant alpha_s. Including the finite bottom quark mass and electroweak effects, the Standard Model predictions for the W boson helicity fractions are...

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Detalles Bibliográficos
Autores principales:	Czarnecki, Andrzej, Korner, Jurgen G., Piclum, Jan H.
Lenguaje:	eng
Publicado:	2010
Materias:	Particle Physics - Phenomenology
Acceso en línea:	https://dx.doi.org/10.1103/PhysRevD.81.111503 http://cds.cern.ch/record/1265878

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