New angles on top quark decay to a charged Higgs

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dc.creatorEriksson, David
dc.creatorIngelman, Gunnar
dc.creatorRathsman, Johan
dc.creatorStål, Oscar
dc.date2007-10-31
dc.date.accessioned2026-07-07T11:12:49Z
dc.date.available2026-07-07T11:12:49Z
dc.descriptionTo properly discover a charged Higgs Boson ($H^\pm$) requires its spin and couplings to be determined. We investigate how to utilize $\ttbar$ spin correlations to analyze the $H^\pm$ couplings in the decay $t\to bH^+\to bτ^+ν_τ$. Within the framework of a general Two-Higgs-Doublet Model, we obtain results on the spin analyzing coefficients for this decay and study in detail its spin phenomenology, focusing on the limits of large and small values for $\tanβ$. Using a Monte Carlo approach to simulate full hadron-level events, we evaluate systematically how the $H^\pm\toτ^\pmν_τ$ decay mode can be used for spin analysis. The most promising observables are obtained from azimuthal angle correlations in the transverse rest frames of $t(\bar{t})$. This method is particularly useful for determining the coupling structure of $H^\pm$ in the large $\tanβ$ limit, where differences from the SM are most significant.
dc.description28 pages, 13 figures. Uses JHEP format
dc.identifierhttps://arxiv.org/abs/0710.5906
dc.identifierhttp://arxiv.org/abs/0710.5906
dc.identifierJHEP0801:024,2008
dc.identifierdoi:10.1088/1126-6708/2008/01/024
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191509
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNew angles on top quark decay to a charged Higgs
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