TY  - JOUR
A1  - Eichmann, Ulrich
A1  - Reinhardt, Joachim
A1  - Schramm, Stefan
A1  - Greiner, Walter
T1  - Coulomb effects on electromagnetic pair production in ultrarelativistic heavy-ion collisions
T2  - Physical review A
N2  - We calculate the asymptotic high-energy amplitude for electrons scattering at one ion, as well as at two colliding ions, by means of perturbation theory. We show that the interaction with one ion eikonalizes and that the interaction with two ions causally decouples. We are able to put previous results on perturbative grounds and propose further applications for the obtained rules for interactions on the light cone. We discuss the implications of the eikonal amplitude on the pair production probability in ultrarelativistic peripheral heavy-ion collisions. 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 Coulomb distortions. The impact on single-photon induced processes is discussed.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2391
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-30230
UR  - http://link.aps.org/abstract/PRA/v59/p1223
VL  - 59
IS  - 2
SP  - 1223
EP  - 1237
ER  -