Navegação por Assunto "Gluons"
Resultados 1-20 de 33
-
Amplitudes de espalhamento na cromodinâmica quântica em altas energias no formalismo de dipolos
(2008) [Tese]Numa colisão hadrônica em altas energias, a densidade de quarks e glúons dentro do hádron cresce rapidamente, o que leva também ao crescimento das seções de choque. Esse comportamento, previsto pela Cromodinâmica Quântica ... -
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 ... -
Asymptotic gluon density within the color dipole picture in light of HERA high-precision data
(2023) [Artigo de periódico]We present an analysis of the most precise set of Hadron-Electron Ring Accelerator (HERA) data within the color dipole formalism, by using an analytical gluon density, based on the double-logarithm approximation of the ... -
Central exclusive χc,bproduction at high energy colliders and gluon saturation approach
(2020) [Artigo de periódico]The central exclusive production of χcand χbat the LHC, RHIC and Tevatron energies is analyzed, using the recent unintegrated parton distribution (UGDs) functions available in the package TMDlib. Comparison with data is ... -
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). ... -
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 ... -
Dilepton production through timelike compton scattering within the kT-factorization approach
(2020) [Artigo de periódico]In this work we consider the dilepton production via timelike Compton scattering (TCS) in electronproton and proton-proton collisions. In particular, the differential cross section in terms of the dilepton invariant mass ... -
Double meson production in ultraperipherical heavy-ion collisions
(2003) [Artigo de periódico]The double-meson production in ultraperipheral heavy-ions collisions is addressed, focusing on the particular case of ρJ/Ψ from two-photon reactions. The cross section at photon level is obtained using distinct parameterizations ... -
Efeitos de alta densidade em processos Drell-Yan de altas energias
(2002) [Dissertação]Um dos problemas teóricos mais importantes da Física de Partículas de Altas Energias é a investigação de efeitos de alta densidade na Cromodinâmica Quântica (QCD), que é a teoria que descreve as interações fortes. Tais ... -
Efeitos de flutuações nas amplitudes de espalhamento em altas energias
(2008) [Dissertação]Investigamos os efeitos desempenhados pelas flutuações no número de glúons sobre a evolução dos hádrons em altas energias, sob o referencial de dipolos de cor. Entendemos por flutuações o seu significado estatístico, ou ... -
Exclusive dilepton production via timelike Compton scattering in heavy ion collisions
(2021) [Artigo de periódico]In the present work, kT -factorization formalism is applied to compute the exclusive dilepton production by timelike Compton scattering (TCS) in eA, pA, and AA collisions. The nuclear effects are investigated considering ... -
Exclusive processes described by QCD at electron-ion colliders
(2022) [Tese]In this work we aim to investigate electron-ion collisions, a highly important type of process with huge potential to deeply study the structure of matter. In particular, three processes that involve eA collisions are ... -
Fenomenologia em cromodinâmica quântica com propagador de glúon modificado
(2003) [Tese]A aplicabilidade e usos de propagadores de glúon modificados na Cromodinâmica Quântica (QCD) em diferentes espécies de processos é analisada. Os propagadores modificados de glúon são obtidos por diversos métodos, em especial, ... -
Hard gluon evolution in warming medium
(2022) [Artigo de periódico]We describe the energy distribution of hard gluons travelling through a dense quark–gluon plasma whose temperature increases linearly with time, within a probabilis tic perturbative approach. The results were applied to ... -
Investigating entanglement entropy at small x in DIS off protons and nuclei
(2020) [Artigo de periódico]In this work we analyze the entanglement entropy in deep inelastic scattering off protons and nuclei. It is computed based on the formalism where the partonic state at small-x is maximally entangled with proton being ... -
Investigating the diffractive gluon jet production in lepton-ion collisions
(2020) [Artigo de periódico]We study the diffractive jet production in electron-ion collisions in the kinematic region where the mass MX of the diffractive final state is larger than Q2. Based on parton saturation framework, predictions are done for ... -
Investigating the QCD dynamical entropy in high-energy hadronic collisions
(2022) [Artigo de periódico]The dynamical entropy of dense gluonic states in proton-proton collisions at high energies is studied by using phenomenological models for the unintegrated gluon distribution. The corresponding transverse momentum probability ... -
Meson form factors and nonperturbative gluon propagators
(2003) [Artigo de periódico]The meson (pion and kaon) form factor is calculated in the perturbative framework with alternative forms for the running coupling constant and the gluon propagator in the infrared kinematic region. These modified forms are ... -
Momentos de funções de estrutura na QCD em ordem dominante
(2012) [Trabalho de conclusão de graduação]Será feita uma revisão histórica dos acontecimentos que levaram a formulação da Cromodinâmica Quântica (QCD), introduzindo o formalismo necessário através do estudo de experimentos de espalhamento inelástico profundo (DIS). ... -
Momentum space dipole amplitude for DIS and inclusive hadron production
(2013) [Trabalho completo publicado em evento]
