Ancillary Files to "Analytic two-loop amplitudes for q qbar → γγ and gg → γγ mediated by a heavy-quark loop"

Submission containing ancillary files to the research article "Analytic two-loop amplitudes for q qbar → γγ and gg → γγ mediated by a heavy-quark loop" (arXiv: 2502.00118)
Preprint Number: TUM-HEP 1554/25


If you use the results distributed with this repository in your research work, please cite 2502.00118.

This repository submission contains the following files, all in Mathematica-readable format: 

**** CanonicalBasis.m ****

This file contains the definition of our 165 canonical master integrals.

**** Roots.m ****

This file contains the definitions of the square roots in the form of replacement rules.

**** DiffRelationsEllipticFunctions.m ****

This file contains replacement rules for the differential relations among the elliptic functions.

**** CanonicalDiffEqs.m ****

This file contains the partial differential equations matrices for the canonical basis.

**** HelCoeffs2lbareExpLM.m ****

In this file, we give all the helicity coefficients expanded in the large mass limit.

**** HelCoeffs2lbareExpTt.m ****

In this file, we give all the helicity coefficients expanded in the point (s,t)=(4m2,0).

**** HelCoeffs2lbareExpTu.m ****

In this file, we give all the helicity coefficients expanded in the point (s,u)=(4m2,0).

**** README.txt ****

For more details, see the README.txt file.

Version Documentation:

Version v2 (06.02.2025): added the two files "CanonicalDiffEqs.m" and "HelCoeffs2lbareExpTu.m" missing in version v1.