Top-quark FCNC Productions at LHC in Topcolor-assisted Technicolor Model

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dc.creatorCao, Junjie
dc.creatorLiu, Guoli
dc.creatorYang, Jin Min
dc.creatorZhang, Huanjun
dc.date2007-03-29
dc.date.accessioned2026-07-07T11:59:15Z
dc.date.available2026-07-07T11:59:15Z
dc.descriptionWe evaluate the top-quark FCNC productions induced by the topcolor assisted technicolor (TC2) model at the LHC. These productions proceed respectively through the parton-level processes g g -> t c_bar, c g->t, c g -> t g, c g -> t Z and c g -> t γ. We show the dependence of the production rates on the relevant TC2 parameters and compare the results with the predictions in the minimal supersymmetric model. We find that for each channel the TC2 model predicts a much larger production rate than the supersymmetric model. All these rare productions in the TC2 model can be enhanced above the 3-sigma sensitivity of the LHC. Since in the minimal supersymmetric model only c g -> t is slightly larger than the corresponding LHC sensitivity, the observation of these processes will favor the TC2 model over the supersymmetric model. In case of unobservation, the LHC can set meaningful constraints on the TC2 parameters.
dc.description5 pages, 4 figs
dc.identifierhttps://arxiv.org/abs/hep-ph/0703308
dc.identifierhttp://arxiv.org/abs/hep-ph/0703308
dc.identifierPhys.Rev.D76:014004,2007
dc.identifierdoi:10.1103/PhysRevD.76.014004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206500
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleTop-quark FCNC Productions at LHC in Topcolor-assisted Technicolor Model
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