Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-05-02
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 4 figures
Scientific paper
Electron-positron pair annihilation into a single photon is studied when a second free electron is present. Focussing on the relativistic regime, we show that the photon emitted in the three-lepton interaction may exhibit distinct angular distributions and polarization properties. Moreover, the process can dominate over two-photon annihilation in relativistic electron-positron plasmas of few-MeV temperature. An analogy with three-body recombination of electrons with ions is drawn.
Hu Huayu
Müller Carsten
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