581 research outputs found

    Vergleich 2012 der Kantons- und Gemeindefinanzen = Comparatif 2012 des finances cantonales et communales

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    Depuis 1999, l'Institut de hautes études en administration publique -IDHEAP- élabore et publie chaque année le comparatif des finances cantonales et communales. L'objectif est d'analyser la situation financière des collectivités publiques. L'analyse recourt à deux groupes de quatre indicateurs. Seit 1999 erarbeitet und veröffentlicht das Hochschulinstitut für Öffentliche Verwaltung -IDHEAP- jährlich den Vergleich der Kantons- und Gemeindefinanzen. Das Ziel besteht darin, die Entwicklung der finanziellen Situation der öffentlichen Gemeinwesen zu analysieren. Der Vergleich ist in zwei Gruppen à je vier Kennzahlen aufgeteilt

    Geometric scaling as traveling waves

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    We show the relevance of the nonlinear Fisher and Kolmogorov-Petrovsky- Piscounov (KPP) equation to the problem of high energy evolution of the QCD amplitudes. We explain how the traveling wave solutions of this equation are related to geometric scaling, a phenomenon observed in deep-inelastic scattering experiments. Geometric scaling is for the first time shown to result from an exact solution of nonlinear QCD evolution equations. Using general results on the KPP equation, we compute the velocity of the wave front, which gives the full high energy dependence of the saturation scale.Comment: 4 pages, 1 figure. v2: references adde

    Universality and tree structure of high energy QCD

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    Using non-trivial mathematical properties of a class of nonlinear evolution equations, we obtain the universal terms in the asymptotic expansion in rapidity of the saturation scale and of the unintegrated gluon density from the Balitsky-Kovchegov equation. These terms are independent of the initial conditions and of the details of the equation. The last subasymptotic terms are new results and complete the list of all possible universal contributions. Universality is interpreted in a general qualitative picture of high energy scattering, in which a scattering process corresponds to a tree structure probed by a given source.Comment: 4 pages, 3 figure

    Vergleich 2015 der Kantons- und Gemeindefinanzen = Comparatif 2015 des finances cantonales et communales

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    Chaque année depuis 1999, l'IDHEAP publie son comparatif des finances publiques. Le but est d'apporter un éclairage sur la situation financière des collectivités publiques suisses. Le comparatif couvre tous les échelons institutionnels du pays : la Confédération, les 26 cantons et 19 villes suisses, parmi lesquelles se trouvent 13 chefs-lieux cantonaux. L'analyse recourt à deux groupes de quatre indicateurs. Le premier groupe s'intéresse aux risques pesant sur la santé financière. Le second groupe renseigne sur les risques menaçant la qualité de la gestion financière

    Geometric Scaling in a Symmetric Saturation Model

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    We illustrate geometric scaling for the photon-proton cross section with a very simple saturation model. We describe the proton structure function F2 at small x in a wide kinematical range with an elementary functional form and a small number of free parameters. We speculate that the symmetry between low and high Q2 recently discovered in the data could be related to a well-known symmetry of the two-gluon- exchange dipole-dipole cross section.Comment: 15 pages, 4 figure

    Diffractive photon dissociation in the saturation regime from the Good and Walker picture

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    Combining the QCD dipole model with the Good and Walker picture, we formulate diffractive dissociation of a photon of virtuality Q^2 off a hadronic target, in the kinematical regime in which Q is close to the saturation scale and much smaller than the invariant mass of the diffracted system. We show how the obtained formula compares to the HERA data and discuss what can be learnt from such a phenomenology. In particular, we argue that diffractive observables in these kinematics provide useful pieces of information on the saturation regime of QCD.Comment: 17 pages, 7 figures, revte
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