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Problema inverso do espalhamento elástico próton-próton na representação de parâmetro de impacto / Inverse problem in proton-proton elastic scattering in the impact parameter representationsSilva, Geovanna Luiz Pereira da 10 September 2009 (has links)
Orientador: Marcio Jose Menon / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin / Made available in DSpace on 2018-08-14T22:56:28Z (GMT). No. of bitstreams: 1
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Previous issue date: 2009 / Resumo: Apresenta-se um estudo das Representações de Parâmetro de Impacto e Eiconal através de uma análise empírica dos dados experimentais de espalhamento elástico próton-próton, na região de mais alta energia com informações experimentais disponíveis (seis conjuntos de dados no intervalo de energia no centro de massa 19.4 - 62.5 GeV). Fazendo-se uso de uma nova parametrização independente de modelo para a amplitude de espalhamento e através de reduções (ajustes) dos dados experimentais de seção de choque diferencial, determina-se as funções de perfil (partes real e imaginária), recobrimento inelástica e eiconal (partes real e imaginária) no espaço de parâmetro de impacto. Utilizando-se um método semi-analítico, determina-se a função opacidade (parte imaginária da eiconal) no espaço de momento transferido. Todos os resultados empíricos para essas grandezas são determinados com as incertezas correspondentes, calculadas através da propagação de erros dos parâmetros livres de ajuste (variâncias e covariâncias). Em particular, mostra-se que a função de recobrimento inelástica apresenta um efeito periférico em torno de 2,0 fm e que os resultados empíricos para a função opacidade podem ser analiticamente parametrizados por três contribuições gaussianas, dominantes nas regiões de pequeno, médio e grande momento transferido. Discute-se interpretações físicas dos resultados (aspectos ópticos/geométricos e baseados na QCD), bem como a aplicabilidade dos resultados empíricos na seleção, construção e desenvolvimento de modelos fenomenológicos, em particular, aqueles baseados ou inspirados na QCD / Abstract: The Impact Parameter and Eikonal Representations are investigated by means of an empirical analysis of the experimental data on proton-proton elastic scattering, at the highest energy region with experimental information available (six data sets at center of mass energies 19.4 - 62.5 GeV). Making use of a novel model-independent parametrization for the scattering amplitude and data reductions (fits) to differential cross section data, we extract the profile function (real and imaginary parts), the inelastic overlap function and the eikonal function (real and imaginary parts) in the impact parameter space. By means of a semi-analytical method, the opacity function (imaginary part of the eikonal) is also extracted in the momentum transfer space. All the empirical results for these quantities are determined with the corresponding uncertainties, evaluated through error propagation from the free fit parameters (variances and covariances). In particular, it is shown that the inelastic overlap functions present a peripheral effect around 2.0 fm and that the empirical results for the opacity function can be analytically parametrized by three Gaussian components each one with leading contribution at small, intermediate and large values of the momentum transfer. Physical interpretations of the results are discussed (optical/geometrical and QCD-based aspects), as well as the applicability of the empirical results in the selection, construction and development of phenomenological models, mainly those based or inspired in QCD / Mestrado / Física das Particulas Elementares e Campos / Mestra em Física
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Inelastic scattering of intermediate energy nucleonsEmmerson, John McLaren January 1964 (has links)
No description available.
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An experimental study of some K-p interactions at 6 GeV/cWilkinson, K. I. January 1967 (has links)
No description available.
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Computer mechanisation of algebraic procedures in quantum field theory, with application to radiative corrections for electron-proton scatteringCampbell, J. A. January 1966 (has links)
No description available.
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Proton conduction in organic solidsChan-Henry, Robert Yatshein January 1971 (has links)
Dielectric, d. c. conductivity and electrolysis measurements have been made principally on solid imidazole and urea. Electrode effects, especially the development of a suitable protode, and techniques for detecting mobile protons in solids were pursued. The dielectric data have been correlated with the d. c. results. A mechanism for extrinsic proton conduction in urea has been proposed.
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Proton Nuclear Magnetic Resonance in MicaTownsend, Don H. 05 1900 (has links)
The experiments to be described here were undertaken for the purpose of determining, if possible, by NMR techniques whether or not the hydroxyl protons in mica are bound in a regular crystalline array, and, if so, whether or not the hydroxyl protons occur in reasonably isolated pairs as in waters of hydration.
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Mécanismes de recuit des bilacunes produites dans le silicium par irradiation de protonsPoirier, Rémi January 2005 (has links)
No description available.
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Measurement of blood flow through proton activation of positron emitting tracersMiller, Thomas James January 1981 (has links)
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1981. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE. / Bibliography: leaf 186. / by Thomas James Miller, Jr. / M.S.
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A model for proton, deuteron and pion production in relativistic heavy ion collisions /Gale, C. (Charles) January 1982 (has links)
No description available.
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Deep inelastic ploarized electron-proton scattering in QCDMarleau, Guy. January 1983 (has links)
No description available.
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