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Using modern multiloop calculation methods, we derive the analyticalexpressions for the total cross sections of the processes $e^-\gamma \toe^-X\bar{X}$ with $X=\mu,\,\gamma$ or $e$ at arbitrary energies. For the firsttwo processes our results are expressed via classical polylogarithms. The crosssection of $e^-\gamma \to e^-e^-e^+$ is represented as a one-fold integral ofcomplete elliptic integral $\mathrm{K}$ and logarithms. Using our results, wecalculate the threshold and high-energy asymptotics and compare them withavailable results.

Total cross sections of $e\gamma\to e X\bar{X}$ processes with $X=\mu,\gamma, e$ via multiloop methods