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Pair annihilation in laser pulses: optical vs. XFEL regimes

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arxiv 1105.3475 v2 pith:HFR232TZ submitted 2011-05-17 hep-ph hep-thphysics.acc-ph

Anton Ilderton , Petter Johansson , Mattias Marklund This is my paper · ORCID
classification hep-phhep-thphysics.acc-ph
keywords annihilationpairlaseropticalsinglexfeladmittingbeams
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We discuss the theory and phenomenology of pair annihilation, within an ultra-short laser pulse, to a single photon. The signature of this process is the uni-directional emission of single photons with a fixed energy. We show that the cross section is significantly larger than for two-photon pair annihilation in vacuum, with XFEL parameters admitting a much clearer signal than optical beams.

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