γ-γ Physics with peripheral relativistic heavy ion collisions |
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Authors: | G Baur C A Bertulani |
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Institution: | 1. Institut für Kernphysik, Kernforschungsanlage Jülich GmbH, Jülich, Germany 2. Instituto de Fisica, Universidade Federal do Rio de Janeiro, 21944, Rio de Janeiro, Brazil
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Abstract: | The high flux of equivalent photons present in relativistic heavy ion collisions of two chargesZ 1 andZ 2 gives rise to the collision of two equivalent photons. The cross-sections for various processes are directly related to the correspondingγ- γ cross-sections. As compared toγ- γ physics being studied at e+ e? colliders, we find that high energy states will not be so easily accessible at the existing facilities, however, the enhancement factor (Z 1 Z 2)2 in the expression for the cross section will provide very large photon fluxes for lower energies. |
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