14,788 research outputs found

    New Features in FormCalc 4

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    FormCalc is a Mathematica package for the automatic computation of tree-level and one-loop Feynman amplitudes. It accepts diagrams generated by FeynArts, simplifies them, and generates a complete Fortran code for their numerical evaluation. Version 4 includes new features which enhance performance, convenience of use, and modularity/code reusability.Comment: 5 pages, Talk given at the 7th DESY Workshop On Elementary Particle Theory: Loops And Legs In Quantum Field Theory, Zinnowitz, Germany, 25-30 Apr 200

    News from FormCalc and LoopTools

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    The FormCalc package automates the computation of FeynArts amplitudes up to one loop including the generation of a Fortran code for the numerical evaluation of the squared matrix element. Major new or enhanced features in Version 5 are: iterative build-up of essentially arbitrary phase-spaces including cuts, convolution with density functions, and uniform treatment of kinematical variables. The LoopTools library supplies the one-loop integrals necessary for evaluating the squared matrix element. Its most significant extensions in Version 2.2 are the five-point family of integrals, and complex and alternate versions.Comment: 5 pages, to appear in the proceedings of the 7th International Symposium on Radiative Corrections (RADCOR05), Shonan Village, Japan, 200

    Implementation of the O(αt2)\mathcal{O}{\left(\alpha_t^2\right)} MSSM Higgs-mass corrections in FeynHiggs\tt{FeynHiggs}

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    We describe the implementation of the two-loop Higgs-mass corrections of O(αt2)\mathcal{O}{\left(\alpha_t^2\right)} in the complex MSSM in FeynHiggs\tt{FeynHiggs}. The program for the calculation is included in FeynHiggs\tt{FeynHiggs} and documented here in some detail such that it can be re-used as a template for similar calculations.Comment: 12 pages, 1 figur

    Commercial paper

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    Commercial paper issues

    Commercial paper

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    Commercial paper issues ; Money market

    Interest rate expectations and the slope of the money market yield curve

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    An examination of the relationship between yield and maturity in the money market. The expectations theory suggests that the yield curve should be a good predictor of future spot interest rates. A substantial body of research in recent years has tested this implication of the theory and discussed possible reasons for the lack of support for the theory from these tests. This paper provides a review of this literature.Interest rates

    The Relationship of Participation in Service Learning Courses with Alumni Civic-Mindedness and Effectiveness Working with Diversity

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    Analysis of data from the 2014 IUPUI Alumni survey found that undergraduate alumni who participated in service learning courses reported higher levels of civic-mindedness than alumni who did not participate or participated less often in service learning courses. These results were significant after adjusting for gender, ethnicity, volunteer service in high school, and four high impact practices - participation in study abroad, research with faculty, practicum, and co-curricular service. High school volunteer service, practicum, and co-curricular service were also independent predictors of civic–mindedness. Alumni who participated in service learning courses also reported higher levels of effectiveness working with people of different races, ethnicities and religions
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