Determination of Parton Densities for QCD partons and Electroweak Bosons
K. Moral Figueroa, E. Gallo, H. Jung, S. Taheri Monfared
TL;DR
This paper develops a comprehensive method to determine parton densities including both QCD and electroweak effects, using the extended DGLAP evolution and the Parton-Branching approach, validated against experimental data.
Contribution
It introduces a novel combined QCD and electroweak parton density determination using the PB approach at NLO for QCD and LO for electroweak, with validated results in standard formats.
Findings
Parton densities are successfully extracted including electroweak contributions.
The densities are validated against experimental data and provided in standard formats.
The approach enables improved phenomenological predictions for collider processes.
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 . The resulting collinear and transverse-momentum dependent (TMD) densities are provided in LHApdf and TMDlib formats for direct phenomenological use.
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