Complete one-loop corrections to decays of charged and CP-even neutral Higgs bosons into sfermions

Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, A-1050 Vienna, Austria
Nuclear Physics B (Impact Factor: 3.93). 02/2007; 776(1):138-169. DOI: 10.1016/j.nuclphysb.2007.03.048
Source: arXiv


We present the full one-loop corrections to charged and CP-even neutral Higgs boson decays into sfermions including also the crossed channels. The calculation was carried out in the minimal supersymmetric extension of the Standard Model and we use the on-shell renormalization scheme. For the down-type sfermions, we use running fermion masses and the trilinear coupling Af as input. Furthermore, we present the first numerical analysis for decays according to the Supersymmetric Parameter Analysis project. This requires the renormalization of the whole MSSM. The corrections are found to be numerically stable and not negligible.

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    • "Also another similar calculation for stop production and direct decay was recently performed in [50]. Conversely, calculations of higher-order contributions to either production [12, 51–72] or decay [73] [74] [75] [76] [77] [78] [79] [80] [81] [82] [83] [84] [85] of squarks (and gluinos) are manifold and include electroweak NLO corrections as well as QCD corrections beyond NLO. The study of the signature 2j + l + l − (OS-SF) + E T (+X) presented here includes the contribution from squark–squark production , which constitutes the dominant production channel in the case of heavy squarks and gluinos, as already pointed out. "
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