| Issue |
EPJ Web Conf.
Volume 365, 2026
BPU12 Congress – 12th General Conferences of the Balkan Physical Union
|
|
|---|---|---|
| Article Number | 05001 | |
| Number of page(s) | 8 | |
| Section | High Energy, Particle Physics, Gravitation and Cosmology | |
| DOI | https://doi.org/10.1051/epjconf/202636505001 | |
| Published online | 15 April 2026 | |
https://doi.org/10.1051/epjconf/202636505001
Drell-Yan Production Using a New Approach PDF2ISR in the PYTHIA Event Generator
1 Faculty of Science and Mathematics, University of Montenegro, Podgorica, Montenegro
2 University of Antwerp, Antwerp, Belgium
3 II. Institut für Theoretische Physik, Universität Hamburg, Hamburg, Germany
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Published online: 15 April 2026
Abstract
We present PDF2ISR, a new method for constructing an initial partem shower consistent with parton densities, applied to Drell-Yan production. Implemented in the PYTHIA8 event generator, it incorporates the Parton Branching framework to modify the initial-state shower. Predictions are systematically validated against those from the CASCADE3 generator, which also employs the Parton Branching method and the same parton densities, including transverse-momentum-dependent distributions. After confirming the consistency of the modified initial-state showers with the Parton Branching method, we apply PDF2ISR to generate full Drell-Yan events with radiation included at each step and compare the resulting cross sections as a function of the pair's transverse momentum with the latest LHC measurements.
© The Authors, published by EDP Sciences, 2026
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