Two-loop form factors for diphoton production in quark annihilation channel with heavy quark mass dependence

A bstract 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...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2023; no. 12; pp. 105 - 28
Main Authors Becchetti, Matteo, Bonciani, Roberto, Cieri, Leandro, Coro, Federico, Ripani, Federico
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 15.12.2023
Springer Nature B.V
SpringerOpen
Subjects
Classical and Quantum Gravitation
Computation
Differential equations
Elementary Particles
Form factors
High energy physics
Higher-Order Perturbative Calculations
Integrals
Physics
Physics and Astronomy
Power series
Quantum chromodynamics
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Radiation
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Top Quark
Top Quark
Higher-Order Perturbative Calculations
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Summary:A bstract 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.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP12(2023)105