Effective lagrangian for the tbH^+ interaction in the MSSM and charged Higgs phenomenology

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dc.creatorCarena, M.
dc.creatorGarcia, D.
dc.creatorNierste, U.
dc.creatorWagner, C. E. M.
dc.date1999-12-27
dc.date2000-01-28
dc.date.accessioned2026-07-07T10:53:18Z
dc.date.available2026-07-07T10:53:18Z
dc.descriptionIn the framework of a 2HDM effective lagrangian for the MSSM, we analyse important phenomenological aspects associated with quantum soft SUSY-breaking effects that modify the relation between the bottom mass and the bottom Yukawa coupling. We derive a resummation of the dominant supersymmetric corrections for large values of \tb to all orders in perturbation theory. With the help of the operator product expansion we also perform the resummation of the leading and next-to-leading logarithms of the standard QCD corrections. We use these resummation procedures to compute the radiative corrections to the \tbH, \Htb decay rates. In the large \tb regime, we derive simple formulae embodying all the dominant contributions to these decay rates and we compute the corresponding branching ratios. We show, as an example, the effect of these new results on determining the region of the \mH--\tb plane excluded by the Tevatron searches for a supersymmetric charged Higgs boson in top quark decays, as a function of the MSSM parameter space.
dc.description33 pages, LaTeX, 17 figures, revised version submitted to Nuc. Phys. B
dc.identifierhttps://arxiv.org/abs/hep-ph/9912516
dc.identifierhttp://arxiv.org/abs/hep-ph/9912516
dc.identifierNucl.Phys.B577:88-120,2000
dc.identifierdoi:10.1016/S0550-3213(00)00146-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185436
dc.subjectHigh Energy Physics - Phenomenology
dc.titleEffective lagrangian for the tbH^+ interaction in the MSSM and charged Higgs phenomenology
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