Work

Determination of parton densities for QCD partons and electroweak bosons

Year: 2026

Type: article

Abstract: Parton densities are obtained from a solution of the extended DGLAP-type evolution equation that includes both QCD and electroweak contributions. The equations are solved using the Parton-Branching (PB) approach, and the evolution is performed at next-to-leading order for QCD partons and leading order for electroweak bosons. The initial QCD parton distributions are fitted to HERA deep inelastic scattering data, while photon and weak-boson densities are generated perturbatively and validated against $$d\sigma /dQ^2$$ d σ / d Q 2 . The resulting collinear and transverse-momentum dependent (TMD) densities are provided in LHApdf and TMDlib formats for direct phenomenological use.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-026-15577-4

Authors: K. Moral Figueroa, E. Gallo, H. Jung, S. Taheri Monfared

Institutions: Deutsches Elektronen-Synchrotron DESY, Universität Hamburg, University of Antwerp

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funder: Deutsche Forschungsgemeinschaft

Awards: G432818845, EXC 2121: Quantum Universe