Work

Two-loop coefficient functions in deeply virtual Compton scattering: flavor-singlet axial-vector and transversity case

Year: 2023

Type: preprint

Abstract: We calculate the two-loop flavor-singlet axial-vector and gluon transversity coefficient functions for deeply virtual Compton scattering in QCD. We observe interesting properties regarding the transcendentality of the transversity coefficient function. Our results complete the calculation of the full next-to-next-to-leading order coefficient function in deeply virtual Compton scattering. Numerically, the two-loop corrections in the axial-vector and transversity channel are comparable to their vector counterpart at moderate skewness parameter ξ and hence indispensable for analyzing the upcoming high-precision data from the Electron-Ion Collider.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2310.05724

Authors: Ji, Yao, Schoenleber, Jakob

Institutions: Technical University of Munich, University of Regensburg

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

Awards: G256797447, FOR 2926: Next Generation Perturbative QCD for Hadron Structure: Preparing for the ElectronIon Collider, TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik, G6084215942

OpenAlex ID: W4387560322

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