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Multi-photon exchange processes in ultraperipheral relativistic heavy-ion collisions

Baur, Gerhard and Hencken, Kai and Aste, Andreas and Trautmann, Dirk and Klein, Spencer. (2003) Multi-photon exchange processes in ultraperipheral relativistic heavy-ion collisions. Nuclear Physics A, 729. pp. 787-808.

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Official URL: http://edoc.unibas.ch/dok/A5839766

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Abstract

The very strong electromagnetic fields present in ultraperipheral relativistic heavy-ion collisions lead to important higher-order effects of the electromagnetic interaction. These multi-photon exchange processes are studied using perturbation theory and the sudden or Glauber approximation. In many important cases, the multi-photon amplitudes factorize into independent single-photon amplitudes. These amplitudes have a common impact parameter vector, which induces correlations between the amplitudes. Impact-parameter dependent equivalent-photon spectra for simultaneous excitation are calculated, as well as, impact-parameter dependent γγ-luminosities. Excitations, like the multi-phonon giant dipole resonances, vector meson production and multiple e+e−-pair production can be treated analytically in a bosonic model, analogous to the emission of soft photons in QED.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Atomphysik (Trautmann)
UniBasel Contributors:Baur, Gerhard and Trautmann, Dirk and Hencken, Kai and Aste, Andreas W
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0375-9474
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:09 Feb 2017 09:47
Deposited On:14 Sep 2012 06:45

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