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 arXiv:2308.10885. 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.
Two-loop form factors for diphoton production in quark annihilation channel with heavy quark mass dependence / Matteo Becchetti; Roberto Bonciani; Leandro Cieri; Federico Coro; Federico Ripani. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2023:(2023), pp. 1-27. [10.1007/JHEP12(2023)105]
Two-loop form factors for diphoton production in quark annihilation channel with heavy quark mass dependence
Roberto Bonciani;
2023
Abstract
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 arXiv:2308.10885. 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.
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