Resonant photoproduction of ultrarelativistic electron-positron pairs on a nucleus in strong monochromatic light field

Abstract

For complete development of quantum electrodynamics in the presence of a strong external field, the proper understanding of resonant processes and all their peculiarities is essential. We present our attempt to analytically investigate the resonant case of laser-assisted electron-positron pair photoproduction on a nucleus. Due to the presence of external field, the intermediate virtual particle may become real, herewith the second order process in the fine structure constant effectively reduces into the two successive first order processes. All inherent kinematics features were discussed in details and the resonant differential cross section was obtained. We established that the resonant energies of produced particles ambiguously depend on the positron (channel A) or electron (channel B) outgoing angle, and the certain minimal amount of absorbed wave photons are required for resonance to happen. Furthermore, the resonant cross section significantly exceeds the corresponding one in the absence of the external field within the particular kinematic regions and consequently, the considered process can be used qua a marker for probing theoretical predictions of quantum electrodynamics with strong background field.

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Cited by in corpus (6)

• Advances in QED with intense background fields
• Muon pair production via $e^{+}{e}^{-}$ annihilation in the presence of a circularly polarized laser field
• Relativistic elastic scattering of an electron by a muon in the field of a circularly polarized electromagnetic wave
• The generation of narrow ultrarelativistic beams of positrons (electrons) in the process of resonant photogeneration of pairs on nuclei in a strong electromagnetic field
• Low-energy multi-photon scattering at tree-level and one-loop order in a homogeneous electromagnetic field
• Laser-assisted CP-odd and CP-even Higgs bosons production in THDM