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

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

1998-06-10

arxiv.org/abs/nucl-th/9806031v1

Phys.Rev.A59:1223-1237,1999

Physics

Nuclear Physics

Nuclear Theory

13 pages, 4 .eps figures

Scientific paper

10.1103/PhysRevA.59.1223

We discuss the implications of the eikonal amplitude on the pair production probability in ultrarelativistic heavy-ion transits. In this context the Weizs\"acker-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.

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