Coulomb Effects on Electromagnetic Pair Production in Ultrarelativistic Heavy-Ion Collisions

Abstract

We discuss the implications of the eikonal amplitude on the pair production probability in ultrarelativistic heavy-ion transits. In this context the Weizsäcker-Williams method is shown to be exact in the ultrarelativistic limit, irrespective of the produced particles' mass. A new equivalent single-photon distribution is derived which correctly accounts for the Coulomb distortions. As an immediate application, consequences for unitarity violation in photo-dissociation processes in peripheral heavy-ion encounters are discussed.

13 pages, 4 .eps figures

References in corpus (3)

• Exact Dirac equation calculation of ionization and pair production induced by ultrarelativistic heavy ions
• Two Center Light Cone Calculation of Pair Production Induced by Ultrarelativistic Heavy Ions
• A light-fronts approach to electron-positron pair production in ultrarelativistic heavy-ion collisions

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