PT Journal
AU Becchetti, M
   Bonciani, R
   Cieri, L
   Coro, F
   Ripani, F
TI Two-loop form factors for diphoton production in quark annihilation channel with heavy quark mass dependence
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2023
BP 105
EP 28pp
VL 12
IS 12
DI 10.1007/JHEP12(2023)105
LA English
DE Higher-Order Perturbative Calculations; Top Quark
AB We present the computation of the two-loop form factors for diphoton production in the quark annihilation channel. These quantities are relevant for the NNLO QCD corrections to diphoton production at LHC recently presented in [1]. The computation is performed retaining full dependence on the mass of the heavy quark in the loops. The master integrals are evaluated by means of differential equations which are solved exploiting the generalised power series technique.
ER