Repositório Digital

A- A A+

Double-photon exclusive processes with heavy-quark–heavy-antiquark pairs in high-energy Pb-Pb collisions at energies available at the CERN Large Hadron Collider

.

Double-photon exclusive processes with heavy-quark–heavy-antiquark pairs in high-energy Pb-Pb collisions at energies available at the CERN Large Hadron Collider

Mostrar registro completo

Estatísticas

Título Double-photon exclusive processes with heavy-quark–heavy-antiquark pairs in high-energy Pb-Pb collisions at energies available at the CERN Large Hadron Collider
Autor Klusek-Gawenda, M.
Szczurek, A.
Machado, Magno Valério Trindade
Serbo, V. G.
Abstract The cross section for exclusive heavy-quark and heavy-antiquark pair (Q¯Q) production in peripheral ultrarelativistic heavy-ion collisions is calculated at an energy available at the CERN Large Hadron Collider, i.e., √ sNN = 5.5 TeV. Here we consider only processes with photon-photon interactions and omit diffractive contributions. We present results in the impact parameter equivalent photon approximation and compare some of them with results obtained by exact calculations of the Feynman diagrams in the momentum space.We include Q¯Q, Q¯Qg, and Q¯Qq¯q final states as well as photon single-resolved components. Realistic charge densities in nuclei were taken in the calculation. The different components give contributions of the same order of magnitude to the nuclear cross section. The cross sections found here are smaller than those for the diffractive photon-Pomeron mechanism and larger than the diffractive Pomeron-Pomeron discussed in the literature.
Contido em Physical review. C, Nuclear physics. New York. Vol. 83, no. 2 (Feb. 2011), 024903, 7 p.
Assunto Diagramas de feynman
Fisica nuclear
Modelos de quarks
Núcleos com número de massa entre 59 e 89
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/104186
Arquivos Descrição Formato
000787811.pdf (546.2Kb) Texto completo (inglês) Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.