Improved SUSY QCD corrections to Higgs boson decays into quarks and squarks

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dc.creatorEberl, H.
dc.creatorHidaka, K.
dc.creatorKraml, S.
dc.creatorMajerotto, W.
dc.creatorYamada, Y.
dc.date1999-12-22
dc.date2000-05-11
dc.date.accessioned2026-07-07T10:53:17Z
dc.date.available2026-07-07T10:53:17Z
dc.descriptionWe improve the calculation of the supersymmetric $O(α_s)$ QCD corrections to the decays of Higgs bosons into quarks and squarks in the Minimal Supersymmetric Standard Model. In the on-shell renormalization scheme these corrections can be very large, which makes the perturbative expansion unreliable. This is especially serious for decays into bottom quarks and squarks for large $\tanβ$. Their corrected widths can even become negative. We show that this problem can be solved by a careful choice of the tree-level Higgs boson couplings to quarks and squarks, in terms of the QCD and SUSY QCD running quark masses, running trilinear couplings $A_q$, and on-shell left-right mixing angles of squarks. We also present numerical results for the corrected partial decay widths for the large $\tanβ$ case.
dc.descriptionVersion to be published in PRD
dc.identifierhttps://arxiv.org/abs/hep-ph/9912463
dc.identifierhttp://arxiv.org/abs/hep-ph/9912463
dc.identifierPhys.Rev.D62:055006,2000
dc.identifierdoi:10.1103/PhysRevD.62.055006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185433
dc.subjectHigh Energy Physics - Phenomenology
dc.titleImproved SUSY QCD corrections to Higgs boson decays into quarks and squarks
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