Diffractive Production
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Study of the diffractive production ratio of B+→ Ј/Ψ K+ at CMS / Estudo sobre a razão de produção difrativa e total de B+→ Ј/Ψ K+ no CMS
O presente trabalho refere-se ao estudo sobre a razão da produção difrativa e total de B+ decaindo em J=y +K+, no ambiente do experimento CMS do colisor de prótons LHC do CERN, contribuindo assim com a compreensão geral do Modelo Padrão (SM) como a teoria das interações fundamentais entre as partículas elementares. Inicialmente, é apresentada uma a
Publicado em: 2010
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2. An analysis on single and central diffractive heavy flavour production at hadron colliders
In this contribution results from a phenomenological analysis for the diffractive hadroproduction of heavy flavors at high energies are reported. Diffractive production of charm, bottom and top are calculated using the Regge factorization, taking into account recent experimental determination of the diffractive parton density functions in Pomeron by the H1 C
Brazilian Journal of Physics. Publicado em: 2008-09
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3. 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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4. A Study of Soft Interactions at Ultra High Energies
We present and discuss our recent study of an eikonal two channel model, in which we reproduce the soft total, integrated elastic and diffractive cross sections, and the corresponding forward differential slopes in the ISR-Tevatron energy range. Our study is extended to provide predictions at the LHC and Cosmic Rays energies. These are utilized to assess the
Brazilian Journal of Physics. Publicado em: 2008-09
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5. 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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6. 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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7. 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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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. 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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10. New CDF results on diffraction
We report new diffraction results obtained by the CDF collaboration in proton-antiproton collisions at the Fermilab Tevatron collider at Ös = 1.96 TeV. The first experimental evidence of exclusive dijet and diphoton production is presented. The exclusive results are discussed in context of the exclusive Higgs production at LHC. We a
Braz. J. Phys.. Publicado em: 2007-06
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11. Função de estrutura do antipróton nas interações difrativas a sqrt de s = 1.96 TeV / Antiproton struture function in diffractive interactions at sqrt of s=1.96TeV
In this thesis we present a measurement of the diffractive to non-diffractive production rate and the extraction of the antiproton diffractive structure function. The analysis presented uses data from the DØ proton-antiproton collider at Tevatron/Fermilab with = 1.96 TeV. The data sample was selected using rapidity gap signatures determined through the sum
Publicado em: 2007
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12. Diffractive production of J/ψ in DØ experiment. / Produção difrativa de J/ψ no experimento DØ
This work presents measurements of two diffractive production ratio for heavy flavour physics on sat with the use of are constructed J/ψ → μ + μ sample in pp collisions at s= 1. 96 TeV using the DØ detector at Fermilab Tevatron. These events were selected using the Luminosity Monitor detectors, the calorimeter system and the muon system
Publicado em: 2007