Two-loop amplitudes for $$ \mathcal{O}\left({\alpha}_s^2\right) $$ corrections to Wγγ production at the LHC
Year: 2024
Type: article
Abstract: A bstract We present the two-loop helicity amplitudes contributing to the next-to-next-to-leading order QCD predictions for W -boson production in association with two photons at the Large Hadron Collider. We derived compact analytic expressions for the two-loop amplitudes in the leading colour limit, and provide numerical results for the subleading colour contributions. We employ a compact system of integration-by-part identities provided by the N eat IBP package, allowing for an efficient computation of the rational coefficients of the scattering amplitudes over finite fields.
Source: Journal of High Energy Physics
Institutions: Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Arnold Regge Center, University of Turin, Pohang University of Science and Technology, Asia Pacific Center for Theoretical Physics, University of Chinese Academy of Sciences, University of Science and Technology of China, Peng Huanwu Center for Fundamental Theory, European Organization for Nuclear Research
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4406081318