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Coulomb corrections to perturbation theory for producing electron-positronpairs in ultrarelativistic heavy ion collisions are considered in apart-analytical, part-numerical approach. Production probabilities are reducedfrom perturbation theory with increasing charge of the colliding heavy ions, ashas been previously argued in the literature. It is shown here that thereduction from perturbation theory comes from the appropriate physical spatialcutoff of the electromagnetic potentials arising from the collidingultrarelativistic heavy ions.Comment: 16 pages, latex, 3 eps figure

physical review. c. nuclear physics/physical review. c, nuclear physics

Coulomb corrections in the calculation of ultrarelativistic heavy ion production of continuum<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mi>−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>pairs

Coulomb corrections in the calculation of ultrarelativistic heavy ion production of continuume+e−pairs