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W polarisation beyond helicity fractions in top quark decays
We calculate the density matrix for the decay of a polarised top quark into a polarised W boson and a massive b quark, for the most general Wtb vertex arising from dimension-six gauge-invariant effective operators. We show that, in addition to the well-known W helicity fractions, for polarised top d...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2010
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysb.2010.07.012 http://cds.cern.ch/record/1268722 |