Two-Loop master integrals for heavy-to-light form factors of two different massive fermions

Jan 2, 2018
19 pages
Published in:
  • JHEP 02 (2018) 066
  • Published: Feb 12, 2018
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Abstract: (arXiv)
We calculate the full set of the two-loop master integrals for heavy-to-light form factors of two different massive fermions for arbitrary momentum transfer in NNLO QCD or QED corrections. These integrals allow to determine the two-loop QCD or QED corrections to the amplitudes for heavy-to-light form factors of two massive fermions in a full analytical way, without any approximations. The analytical results of the master integrals are derived using the method of differential equations, along with a proper choosing of canonical basis for the master integrals. All the results of master integrals are expressed in terms of Goncharov polylogarithms.
Note:
  • 20 pages,1 figures. Typos are corrected, to appear in JHEP
  • Perturbative QCD
  • Precision QED
  • fermion: massive
  • quantum electrodynamics: correction
  • electroweak interaction: correction
  • form factor
  • master integral
  • differential equations
  • momentum transfer
  • higher-order: 2