Journal of High Energy Physics (Jan 2021)

Total cross sections of eγ → eX X ¯ $$ eX\overline{X} $$ processes with X = μ, γ, e via multiloop methods

  • Roman N. Lee,
  • Alexey A. Lyubyakin,
  • Vyacheslav A. Stotsky

DOI
https://doi.org/10.1007/JHEP01(2021)144
Journal volume & issue
Vol. 2021, no. 1
pp. 1 – 22

Abstract

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Abstract Using modern multiloop calculation methods, we derive the analytical expressions for the total cross sections of the processes e − γ → e − X X ¯ $$ {e}^{-}X\overline{X} $$ with X = μ, γ or e at arbitrary energies. For the first two processes our results are expressed via classical polylogarithms. The cross section of e − γ → e − e − e + is represented as a one-fold integral of complete elliptic integral K and logarithms. Using our results, we calculate the threshold and high-energy asymptotics and compare them with available results.

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