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Electron positron pair production in the external electromagnetic field of colliding relativistic heavy ions

Aste, Andreas and Baur, Gerhard and Hencken, Kai and Trautmann, Dirk and Scharf, Günter. (2002) Electron positron pair production in the external electromagnetic field of colliding relativistic heavy ions. European Physical Journal C. Particles and Fields , 23. pp. 545-550.

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Official URL: http://edoc.unibas.ch/dok/A5839762

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Abstract

The results concerning the production in peripheral highly relativistic heavy-ion collisions presented in a recent paper by Baltz et al. are rederived in a very straightforward manner. It is shown that the solution of the Dirac equation directly leads to the multiplicity, i.e. to the total number of electron–positron pairs produced by the electromagnetic field of the ions, whereas the calculation of the single pair production probability is much more involved. A critical observation concerns the unsolved problem of seemingly absent Coulomb corrections (Bethe–Maximon corrections) in pair production cross sections. It is shown that neither the inclusion of the vacuum–vacuum amplitude nor the correct interpretation of the solution of the Dirac equation concerning the pair multiplicity is able the explain (from a fundamental point of view) the absence of Coulomb corrections. Therefore the contradiction has to be accounted to the treatment of the high energy limit.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Atomphysik (Trautmann)
UniBasel Contributors:Hencken, Kai and Baur, Gerhard and Trautmann, Dirk and Aste, Andreas W
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Springer
ISSN:1434-6044
e-ISSN:1434-6052
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:09 Feb 2017 07:22
Deposited On:14 Sep 2012 06:44

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