Rare three-body decay t -> c h gamma in the standard model and the two-Higgs doublet model

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dc.creatorCordero-Cid, A.
dc.creatorGarcia-Luna, J. L.
dc.creatorRamirez-Zavaleta, F.
dc.creatorTavares-Velasco, G.
dc.creatorToscano, J. J.
dc.date2005-01-09
dc.date2006-02-28
dc.date.accessioned2026-07-07T06:38:17Z
dc.date.available2026-07-07T06:38:17Z
dc.descriptionA complete calculation of the rare three-body decay t --> c h gamma is presented in the framework of the standard model. In the unitary gauge, such a calculation involves about 20 Feynman diagrams. We also calculate this decay in the general two-Higgs doublet model (model III), in which it arises at the tree-level. While in the standard model the decay t --> c h gamma is extremely suppressed, with a branching fraction of the order of $10^{-15}$ for a Higgs boson mass of the order of 115 GeV, in the model III it may have a branching ratio up to $10^{-5}$. We also discuss the crossed decay h --> b \bar{s} gamma.
dc.descriptionUpdated to match published version
dc.identifierhttps://arxiv.org/abs/hep-ph/0501060
dc.identifierhttp://arxiv.org/abs/hep-ph/0501060
dc.identifierJ.Phys. G32 (2006) 529-546
dc.identifierdoi:10.1088/0954-3899/32/4/010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100684
dc.subjectHigh Energy Physics - Phenomenology
dc.titleRare three-body decay t -> c h gamma in the standard model and the two-Higgs doublet model
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