Navegação Ciências Exatas e da Terra por Assunto "Reações fóton-núcleo"

Resultados 1-5 de 5

    • Coherent photon-hadron interactions in pA collisions : small-x physics after HERA 

      Goncalves, Victor Paulo Barros; Machado, Magno Valério Trindade (2006) [Artigo de periódico]
      In this paper we study the photoproduction of heavy quarks and vector mesons in the coherent proton-nucleus (pA) interactions for RHIC and LHC energies and analyze if these processes can be used to determine the QCD dynamics ...

    • Dilepton pT suppression in the color glass condensate 

      Silva, Marcos André Betemps Vaz da; Gay Ducati, Maria Beatriz (2005) [Artigo de periódico]
      Dilepton production is investigated in proton–nucleus collisions in the forward region using the color glass condensate approach. The transverse momentum distribution (pT), more precisely the ratio between proton–nucleus ...

    • Nuclear charm and bottom production : a comparison among high energy approaches 

      Goncalves, Victor Paulo Barros; Machado, Magno Valério Trindade (2004) [Artigo de periódico]
      We calculate the nucleon and nuclear photoproduction cross sections for heavy quarks within the k⊥-factorization formalism, considering the current high energy approaches which include nuclear and saturation effects. Our ...

    • The QCD pomeron in ultraperipheral heavy ion collisions : IV. Photonuclear production of vector mesons 

      Goncalves, Victor Paulo Barros; Machado, Magno Valério Trindade (2005) [Artigo de periódico]
      The photonuclear production of vector mesons in ultraperipheral heavy-ion collisions is investigated within the QCD color dipole picture, with particular emphasis on the saturation model. The integrated cross section and ...

    • Triton angular distributions from the /sup 7/Li([gama],t)[gama] reaction near threshold 

      Likhachev, Vladmir P.; Martins, Marcos Nogueira; Cruz, Manoel Tiago Freitas da; Arruda-Neto, João Dias Toledo; Geraldo, L. Paulo; Semmler, Renato; Dias, Johnny Ferraz (1999) [Artigo de periódico]
      Angular distributions of tritons emitted in the reaction ⁷Li(y,t)α have been measured for two photon energy intervals (6.4–6.7 and 8.5–9.0 MeV), and θt between 30° and 150°. Monochromatic photons from neutron capture ...