Downloads

Use the official repositories for source code and tagged releases, PyPI for the Python package, and this website for project-hosted TMD archives and selected integration packages.

Library and documentation

Source repository Browse the C++ implementation, wrappers, examples, and development history. Tagged releases Download versioned source releases and review release notes. Python package Install published wheels with python -m pip install pdfxtmd. API reference Open the generated Doxygen documentation.

QtPDFxTMDPlotter

QtPDFxTMDPlotter is a Qt/QML graphical application for interactive visualization of PDF and TMD calculations.

PDF sets

PDFxTMDLib expects each distribution set to be extracted into a directory that contains its .info file and numbered grid members. See PDF sets and configuration before using a downloaded archive.

Collinear PDF sets

Download standard collinear sets from the LHAPDF set index.

TMD sets

The lhagrid_tmd1 format stores grids in x, kT2, μ2, and flavor. This small source example demonstrates how a compatible grid can be generated:

Download lhagrid_tmd_1_gen.cpp

TMD set Description Archive
PB-LO-HERAI+II-2020-set1 Parton Branching LO set based on HERA I+II data Download ZIP
PB-LO-HERAI+II-2020-set2 Parton Branching LO set based on HERA I+II data Download ZIP
PB-NLO+QED-HERAI+II-set1 Parton Branching NLO+QED set based on HERA I+II data Download ZIP
PB-NLO+QED-HERAI+II-set2 Parton Branching NLO+QED set based on HERA I+II data Download ZIP
PB-NLO-HERAI+II-2023-set2-qs=0.74 Parton Branching NLO set with qs = 0.74 Download ZIP
PB-NLO-HERAI+II-2023-set2-qs=1.04 Parton Branching NLO set with qs = 1.04 Download ZIP

After extraction, add the archive’s parent directory to paths: in config.yaml.

DPD sets

These self-contained archives provide the dense reference grid and the compact hybrid grid for double parton distributions. Extract a selected archive beneath your PDFxTMD data directory and follow the DPD usage instructions.

DPD set Description Archive
MSTW2008lo68cl_GSDPDF_PDFxTMD Dense, full-resolution reference DPD grid Download TAR.ZST (707 MB)
MSTW2008lo68cl_GSDPDF_Hybrid_256x3 Compact hybrid DPD grid with the native surrogate file Download TAR.ZST (18 MB)

The complete description of the hybrid grid is available in arXiv:2609.14048.

Experimental integrations

These packages are project-maintained adaptations for testing or research use. They are not official upstream distributions of PYTHIA or KaTie.

PYTHIA 8.3 integration archive Adaptation used to compare and validate PDFxTMDLib behavior in an event-generator workflow. KaTie with PDFxTMDLib Project fork supporting collinear and TMD set selection from KaTie input files.