616 research outputs found

    Feno e silagem como volumoso para confinamento de bovinos de corte.

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    bitstream/item/67190/1/CT-49-2001.pd

    Psychometric construction and analysis of the corporate experience survey.

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    Dept. of Psychology. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1982 .D448. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.)--University of Windsor (Canada), 1982

    Avaliação de cultivares de trigo de duplo propósito, recomendados para cultivo no estado do Rio Grande do Sul.

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    bitstream/CNPT-2010/37413/1/Comunicado-137.pd

    Avaliação de cultivares de trigo de duplo propósito, recomendados para cultivo no estado do Rio Grande do Sul.

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    bitstream/item/31090/1/Comunicado-137.pd

    Resultados da experimentação de genótipos de trigo para aptidão a duplo propósito no Paraná, em 2000.

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    bitstream/item/84114/1/CNPT-BOL.-PESQ.-6-01.pd

    Experimentação de genótipos de trigo para duplo propósito no Paraná, em 1999.

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    Introdução; Material e métodos; Resultados e discussão; Matéria verde; Matéria seca; Rendimento de grãos; Ciclo e altura; Características agronômicas.bitstream/item/157857/1/FL-07263.pd

    Some analytic results for two-loop scattering amplitudes

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    We present analytic results for the finite diagrams contributing to the two-loop eight-point MHV scattering amplitude of planar N=4 SYM. We use a recently proposed representation for the integrand of the amplitude in terms of (momentum) twistors and focus on a restricted kinematics in which the answer depends only on two independent cross-ratios. The theory of motives can be used to vastly simplify the results, which can be expressed as simple combinations of classical polylogarithms.Comment: 18 page

    Monte Carlo studies of the jet activity in Higgs + 2 jet events

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    Tree-level studies have shown in the past that kinematical correlations between the two jets in Higgs+2-jet events are direct probes of the Higgs couplings, e.g. of their CP nature. In this paper we explore the impact of higher-order corrections on the azimuthal angle correlation of the two leading jets and on the rapidity distribution of extra jets. Our study includes matrix-element and shower MC effects, for the two leading sources of Higgs plus two jet events at the CERN LHC, namely vector-boson and gluon fusion. We show that the discriminating features present in the previous leading-order matrix element studies survive.Comment: 12 pages, 10 figures. Version to appear on JHEP. Figs. 5-8 replaced with colour version

    Virtual Next-to-Leading Corrections to the Impact Factors in the High-Energy Limit

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    We compute the virtual next-to-leading corrections to the impact factors or off-shell coefficient functions in the high-energy limit. When combined with the known real corrections, these results will provide the complete NLO corrections to the impact factors, which are necessary to use the BFKL resummation at NLL for jet production at both lepton-hadron and hadron-hadron colliders.Comment: LaTeX, 23 page

    Hopf algebras, coproducts and symbols: an application to Higgs boson amplitudes

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    We show how the Hopf algebra structure of multiple polylogarithms can be used to simplify complicated expressions for multi-loop amplitudes in perturbative quantum field theory and we argue that, unlike the recently popularized symbol-based approach, the coproduct incorporates information about the zeta values. We illustrate our approach by rewriting the two-loop helicity amplitudes for a Higgs boson plus three gluons in a simplified and compact form involving only classical polylogarithms.Comment: 46 page
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