Hannover 2010 – scientific programme

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A: Fachverband Atomphysik

A 13: Interaction with Strong or Short Laser Pulses I

A 13.3: Talk

Wednesday, March 10, 2010, 14:45–15:00, F 107

Complete QED theory for trident pair production in strong laser fields — •Huayu Hu, Carsten Müller, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Heidelberg

The creation of electron-positron pairs in strong laser fields is encountering a growing interest in recent years. It has been stimulated by a pioneering experiment at SLAC [1] which realized multiphoton pair production in relativistic electron-laser collisions for the first time. Here, we develop a complete laser-dressed QED description of this process, which treats the competing reaction channels involved in a unified way. We calculate the dependence of the production rate on the laser parameters as well as the angular and momentum distributions of the three final-state particles. An overall good agreement with the measurements is obtained. We also study the process in a manifestly nonperturbative domain.

[1] D. Burke et al., Phys. Rev. Lett. 79, 1626 (1997)