• Open Access

Nonlinear trident pair production in an arbitrary plane wave: A focus on the properties of the transition amplitude

F. Mackenroth and A. Di Piazza
Phys. Rev. D 98, 116002 – Published 11 December 2018

Abstract

The process of nonlinear electron-positron pair production by an electron colliding with an arbitrary plane-wave electromagnetic field (nonlinear trident pair production) is studied analytically and numerically. Special emphasis is put on the properties of the transition amplitude. In fact, its original expression as resulting from applying the Wick’s theorem turns out to be divergent. By utilizing a functional relation derived from gauge invariance, however, the amplitude is regularized and investigated in different regimes. In particular, the amplitude is divided into a two-step and a one-step contribution, depending on the scaling dependence on the laser pulse duration. The corresponding contributions to the positron angular distribution spectra and the resulting interference terms are studied numerically, emphasizing the possibility of measuring experimentally the one-step contribution.

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  • Received 4 May 2018

DOI:https://doi.org/10.1103/PhysRevD.98.116002

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsAtomic, Molecular & OpticalAccelerators & Beams

Authors & Affiliations

F. Mackenroth1,* and A. Di Piazza2,†

  • 1Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, D-01187 Dresden, Germany
  • 2Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, D-69117 Heidelberg, Germany

  • *mafelix@pks.mpg.de
  • dipiazza@mpi-hd.mpg.de

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Issue

Vol. 98, Iss. 11 — 1 December 2018

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