Navegação por Assunto "Fisica de particulas elementares e campos"
Resultados 1-20 de 69
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Algebraic properties of the bethe ansatz for an spl(2,1)-supersymmetric t-j model
(1993) [Artigo de periódico]We investigate the algebraic structure of the supersymmetric t−J model in one dimension. We prove that the Bethe ansatz states are highest-weight vectors of an spl(2,1) superalgebra. By acting with shift operators we ... -
Análise da formulação funcional da mecânica quântica não-relativística
(1980) [Dissertação]Resumo não disponível. -
Análise fenomenológica dos espalhamentos elásticos próton-próton e antipróton-próton em altas energias na representação eiconal
(2016) [Tese]Estudamos os espalhamentos elásticos próton-próton (pp) e antipróton-próton (pp) na representação eiconal por meio das duas principais formulações compatíveis com vínculos de analiticidade e unitaridade: a inspirada na ... -
Analysis of low-x gluon Density from the F/Sub 2/ scaling violations
(1997) [Artigo de periódico]We present an analysis of the current methods of the approximate determination of the gluon density G( X, Q2) at low x from the scaling violations of the proton structure function F2(x,Q2). The gluon density is obtained ... -
Analysis of the photoproduction of massive gauge bosons at the LHeC
(2012) [Artigo de periódico]In this work we investigate the photoproduction of massive gauge bosons, W± and Zº, as part of relevant physics topics to be studied in the proposed electron-proton collider, the Deep Inelastic Electron- Nucleon Scattering ... -
Attractive forces between electrons in (2+1) - dimensional QED
(1992) [Artigo de periódico]Vacuum polarization effects are nonperturbatively incorporated into the photon propagator to eliminate the severe infrared problems characteristic of (2+1)-dimensional QED (QED₃). The theory is thus rephrased in terms of ... -
Backward dilepton production in color dipole and parton models
(2010) [Artigo de periódico]The Drell–Yan dilepton production at backward rapidities is studied in proton-nucleus collisions at Relativistic Heavy Ion Collider and LHC energies by comparing two different approaches: the kT factorization at next-to-leading ... -
Canonical derivation of the gluon propagator in the temporal gauge
(1986) [Artigo de periódico]We reexamine the problem of obtaining, within the operator approach, an unambiguous expression for the longitudinal gluon propagator in the temporal gauge. A regularization procedure respecting Gauss's law and the Hermiticity ... -
Canonical quantization of a two-dimensional model with anomalous breaking of gauge invariance
(1986) [Artigo de periódico]We investigate in detail the operator quantum dynamics of a two-dimensional model exhibiting anomalous breaking of gauge invariance. The equal-time algebra is systematically obtained by using the Dirac-bracket formalism ... -
Chiral bosons and improper constraints
(1994) [Artigo de periódico]We argue that a consistent quantization of the Floreanini-Jackiw model, as a constrained system, should start by recognizing the improper nature of the constraints. Then, each boundary condition defines a problem which ... -
Comportamento infravermelho do propagador do glúon na rede
(2003) [Tese]Investigamos o comportamento infravermelho do propagdor do glúon,no calibre de Ladau, em três dimensões (2+1) para teoria Yang-Mills SU (2) (YM23 )usando simulações em redes euclidianas de grande volume(403, 803, 1403). ... -
Coupling of fermions to the three-dimensional noncommutative CP/sup N-1/ model : minimal and supersymmetric extensions
(2004) [Artigo de periódico]We consider the coupling of fermions to the three-dimensional noncommutative CPN21 model. In the case of minimal coupling, although the infrared behavior of the gauge sector is improved, there are dangerous ~quadratic! ... -
Deciphering 40 TeV rapidity gap physics with 2 TeV jet events
(1992) [Artigo de periódico]Rapidity gaps may provide an adequate signature for electroweak processes at supercolliders, including the production of the Higgs particle. We show how this important issue can be studied in the dijet final states of ... -
Decomposicao de um campo vetorial e sua determinacao, dados seu rotacional e sua divergencia
(1989) [Resumo publicado em evento] -
A dependence of hadron-nucleus massive lepton pair production
(1994) [Artigo de periódico]Nuclear effects in the small x region of hadron-nucleus Drell-Yan processes at 800 GeV are analyzed. We employ the parton recombination model to describe the suppression in the RpA DY(x₂)ratio and we compare it with REMC(x), ... -
Diffraction and the gluon mass
(1993) [Artigo de periódico]We recently proposed a QCD Pomeron described by the exchange of two nonperturbative gluons characterized by a dynamically generated gluon mass. It is shown here that data on elastic scattering, exclusive p production in ... -
Diffractive higgs boson photoproduction in peripheral collisions
(2008) [Trabalho completo publicado em evento] -
Diffractive Higgs boson photoproduction in ultraperipheral collisions at LHC
(2010) [Artigo de periódico]A new production mechanism for the standard model Higgs boson in ultraperipheral collisions at the LHC, which allows central exclusive diffractive production by double pomeron exchange in photonproton processes, is presented. ... -
Diffractive Higgs boson photoproduction in γp process
(2008) [Artigo de periódico]We explore an alternative process for diffractive Higgs boson production in peripheral pp collisions arising from double Pomeron exchange in photon-proton interaction. We introduce the impact factor formalism in order to ... -
Diffractive quarkonium production in association with a photon at the LHC
(2010) [Artigo de periódico]The rates for diffractive quarkonium plus prompt-photon associated production at the LHC are estimated. The theoretical framework considered in the J/Ψ (or Υ ) production associated with a direct photon at the hadron ...
