Abstract
A detailed quantum-electrodynamic calculation of muon pair creation in laser-driven electron–positron collisions is presented. The colliding particles stem from a positronium atom exposed to a superintense laser wave of linear polarization, which allows for high luminosity. The threshold laser intensity of this high-energy reaction amounts to a few 1022 W/cm2 in the near-infrared frequency range. The muons produced form an ultrarelativistic, strongly collimated beam, which is explicable in terms of a classical simple-man's model. Our results indicate the experimental feasibility of the process at high positronium densities in counterpropagating laser beams with the help of present-day technology.
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