Wiebusch, Martin - Search Results - CERN Document Server

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Impact of a Higgs boson at a mass of 126 GeV on the standard model with three and four fermion generations / Eberhardt, Otto (KIT, Karlsruhe, TTP) ; Herbert, Geoffrey (Humboldt U., Berlin) ; Lacker, Heiko (Humboldt U., Berlin) ; Lenz, Alexander (CERN ; Durham U.) ; Menzel, Andreas (Humboldt U., Berlin) ; Nierste, Ulrich (KIT, Karlsruhe, TTP) ; Wiebusch, Martin (KIT, Karlsruhe, TTP)
We perform a comprehensive statistical analysis of the standard model (SM) with three and four generations using the latest Higgs search results from LHC and Tevatron, the electroweak precision observables (EWPOs) measured at LEP and SLD and the latest determinations of M_W, m_t and alpha_s. For the three-generation case we analyse the tensions in the electroweak fit by removing individual observables from the fit and comparing their predicted values with the measured ones. [...]
TTP12-034; arXiv:1209.1101; TTP12-034.- 2012 - 7 p. - Published in : Phys. Rev. Lett. 109 (2012) 241802 APS Published version, local copy: PDF; Preprint: PDF; External link: Preprint

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Status of the fourth fermion generation before ICHEP2012: Higgs data and electroweak precision observables / Eberhardt, Otto (KIT, Karlsruhe, TTP) ; Lenz, Alexander (CERN) ; Menzel, Andreas (Humboldt U., Berlin) ; Nierste, Ulrich (KIT, Karlsruhe, TTP) ; Wiebusch, Martin (KIT, Karlsruhe, TTP)
We perform a global fit of the parameters of the Standard Model with a sequential fourth generation (SM4) to LHC and Tevatron Higgs data and electroweak precision data. We find that the minimal chi-square value of the SM4 is larger than that of the Standard Model with three generations (SM3) by 8 units. [...]
arXiv:1207.0438; TTP12-023; CERN-PH-TH-2012-182; TTP12-023; CERN-PH-TH-2012-182.- 2012 - 5 p. - Published in : Phys. Rev. D 86 (2012) 074014 APS Published version, local copy: PDF; Preprint: PDF; External link: Preprint

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Joint analysis of Higgs decays and electroweak precision observables in the Standard Model with a sequential fourth generation / Eberhardt, Otto (KIT, Karlsruhe, TTP) ; Herbert, Geoffrey (Humboldt U., Berlin) ; Lacker, Heiko (Humboldt U., Berlin) ; Lenz, Alexander (CERN) ; Menzel, Andreas (Humboldt U., Berlin) ; Nierste, Ulrich (KIT, Karlsruhe, TTP) ; Wiebusch, Martin (KIT, Karlsruhe, TTP)
We analyse the impact of LHC and Tevatron Higgs data on the viability of the Standard Model with a sequential fourth generation (SM4), assuming Dirac neutrinos and a Higgs mass of 125 GeV. To this end we perform a combined fit to the signal cross sections of pp -> H -> gamma gamma,ZZ*,WW* at the LHC, to p pbar -> VH -> V b bbar (V = W, Z) at the Tevatron and to the electroweak precision observables. [...]
arXiv:1204.3872; TTP-12-010; CERN-PH-TH-2012-101; TTP-12-010; CERN-PH-TH-2012-101.- 2012 - 7 p. - Published in : Phys. Rev. D 86 (2012) 013011 APS Published version, local copy: PDF; Preprint: PDF; External link: Preprint

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1	Wiebusch, M

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