(** Helicity_amp_quark.m **)

This file generates helicity amplitudes(H-+--, H-+-+, H-++-, H-+++ ) for quark initiated channel from the four projections of Lorentz-covariant Tensors (T1qq,T2qq,T3qq,T4qq) in in ’t Hooft–Veltman scheme (tHV) scheme defined in eq. 2.10 in the paper. 

(** Helicity_amp_gluon.m **)

This file generates helicity amplitudes(H++++, H-+++, H+-++, H++-+, H+++-, H--++, H-+-+, H+--+) for gluon initiated channel from the eight projections of Lorentz-covariant Tensors (T1gg,T2gg,T3gg,T4gg,T5gg,T6gg,T7gg,T8gg) in the ’t Hooft–Veltman scheme (tHV) scheme defined in eq. 2.9 in the paper.

(** mat1.m **)
This file generates the relevant form-factors from projections of Lorentz-covariant Tensors.

(** fftohelicitycheck.m **)
This file generates helicity amplitudes from the form-factors. 


NOTE: The master integrals used in the helicity amplitudes provided in the ancillary files differ slightly from those mentioned in the paper. Specifically, the master integrals in these files are chosen to have minimal crossings.