A non-planar two-loop three-point function beyond multiple polylogarithms

  title={A non-planar two-loop three-point function beyond multiple polylogarithms},
  author={A. V. Manteuffel and L. Tancredi},
  journal={Journal of High Energy Physics},
  • A. V. Manteuffel, L. Tancredi
  • Published 2017
  • Physics
  • Journal of High Energy Physics
  • A bstractWe consider the analytic calculation of a two-loop non-planar three-point function which contributes to the two-loop amplitudes for tt¯$$ t\overline{t} $$ production and γγ production in gluon fusion through a massive top-quark loop. All subtopology integrals can be written in terms of multiple polylogarithms over an irrational alphabet and we employ a new method for the integration of the differential equations which does not rely on the rationalization of the latter. The top topology… CONTINUE READING
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