Diffractive Processes
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Estudo de lacunas de rapidez e caracterização de processos difrativos em eventos de minimum bias a 7TeV no CMS/LHC / Study of rapidity gap and characterization of diffractive processes in minimum bias events at 7TeV in CMS/LHC
Neste trabalho estudamos as características das distribuições da lacuna de rapidez em amostras de eventos de minimum bias de colisões pp a ps=7 TeV no CMS/LHC. Tais eventos são constituídos por processos difrativos, além de processos de QCD mole. São investigados o tamanho e a localização das lacunas, assim como as correlações entre as distribui�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/02/2011
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2. Diffractive higgs boson photoproduction in peripheral collisions
An alternative process is proposed for the diffractive Higgs boson production inspired in the Durham model, exploring it through the photon-proton interaction. In this sense, we estimate the production cross section of the Higgs boson, comparing some sets of parton distributions in the proton and confronting this results with those from other processes.
Brazilian Journal of Physics. Publicado em: 2008-09
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3. Forward Physics at the LHC: within and beyond the Standard Model
We review the detection capabilities in the forward direction of the various LHC experiments together with the associated physics programme. A selection of measurements accessible with near-beam instrumentation in various sectors (and extensions) of the Standard Model (SM) is outlined, including QCD (diffractive and elastic scattering, low-x parton dynamics,
Brazilian Journal of Physics. Publicado em: 2008-09
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4. Projeto e fabricação de nao-estruturas por litografa interferometrica / Design and fabrication of nano-structures by interforometric lithography
In this work the interferometric lithography technique was developed for recording periodic relief nano-structures, one and bi-dimensional, on silicon and glass substrates. In particular, the work is focused in two directions: the study of the profile of the structures recorded in photorresist, through the superimposition of interference light patterns, and
Publicado em: 2008
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5. Diffraction in QCD
This lecture presents a short review of the main features of diffractive processes and QCD inspired models. It includes the following topics: (1) Quantum mechanics of diffraction: general properties; (2) Color dipole description of diffraction; (3) Color transparency; (4) Soft diffraction in hard reactions: DIS, Drell-Yan, Higgs production; (5) Why Pomerons
Brazilian Journal of Physics. Publicado em: 2007-07
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6. Dynamical gluon mass in QCD processes
We perform phenomenological applications of modified gluon propagators and running coupling constants in scattering processes in Quantum Chromodynamics (QCD). The modified forms of propagators and running coupling constant are obtained by non-perturbative methods. The processes investigated includes the diffractive ones - proton-proton elastic scattering, li
Brazilian Journal of Physics. Publicado em: 2007-07
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7. Exclusive processes in diffraction at HERA
Recent results from the H1 and ZEUS experiments on exclusive processes in diffractive ep collisions at HERA are reviewed. The measurements discussed here include dijets and charm in photoproduction as well as in deep inelastic scattering. Such processes are sensitive to the partonic structure of the diffractive exchange, particularly to the gluon content, an
Braz. J. Phys.. Publicado em: 2007-06
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8. Inclusive measurements on diffractive processes in ep collisions
Measurements from the H1 and ZEUS collaborations of the diffractive deep-inelastic scattering process, ep -> eXY, where Y is a proton or a low mass proton excitation, are presented for photon virtualities in the range 2.2 < Q² < 1600 GeV² and squared four-momentum transfer at the proton vertex satisfying | t | < 1 GeV². Diffractive parton distribution fun
Braz. J. Phys.. Publicado em: 2007-06
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9. Estudo do Fluxo de Energia em Colisões Hadrônicas e em Fotoprodução a Altas Energias / Study of Energy Flow in Hadronic Collisions and photoproduction at High Energies
Neste texto nós discutimos o fluxo de energia em reações hadrônicas e em fotoprodução. Apresentamos um modelo de produção de partículas com o qual é fácil estudar a deposição de energia na região central e o efeito de partícula dominante. Analisamos dados de produção de partículas carregadas e charrnosas em várias energias. Discutimos o pa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/1998
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10. Analise fenomenologica de processos hadronicos inelasticos difrativos a altas energias
A phenomenological model for hadronic diffractive dissociation was developed using as a starting point the Mueller s analysis of inclusive processes in the fragmentation region. The behavior of the Pomeron-hadron total cross section is described by using a set of assumptions based on the current phenomenology of elastic processes and total cross section, whi
Publicado em: 1995