Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 13: Quantenfeldtheorie und Gittereichtheorie (Theorie)

T 13.4: Talk

Monday, February 29, 2016, 11:45–12:00, VMP8 SR 106

Lepton-photon interactions in external background fields — •Ibrahim Akal¹ and Gudrid Moortgat-Pick² — ¹Theory Group, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D-22607 Hamburg, Germany — ²II. Institute for Theoretical Physics, University of Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany

We investigate lepton-photon interactions in a class of generalized external background fields with periodic plane-wave character. Considering the full interaction with the background, S-matrix elements are calculated exactly. We apply those general expressions to interaction schemes like Compton scattering in specific field configurations, as for instance provided in modern laser facilities, or in high intense regions of future linear colliders. Results are extended to the case of frontal colliding high-energy field photons with leptons such that new insights beyond the usual soft terms become accessible.