Evolution of parton showers and parton distribution functions
Copyright policy )Evolution of parton showers and parton distribution functions
Initial state evolution in parton shower event generators involves parton distribution functions. We examine the probability for the system to evolve from a higher scale to a lower scale without an initial state splitting. A simple argument suggests that this probability, when multiplied by the ratio of the parton distributions at the two scales, should be independent of the parton distribution functions. We call this the PDF property. We examine whether the PDF property actually holds using pythia and deductor. We also test a related property for the deductor shower and discuss the physics behind the results.
Physical review / D 102(1), 1-19 (2020). doi:10.1103/PhysRevD.102.014025
Published by Soc., [S.l.]
- Deutsches Elektronen-Synchrotron DESY Germany
- University of Oregon United States
- Helmholtz Association of German Research Centres Germany
splitting, FOS: Physical sciences, parton: distribution function, 530, parton: showers, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), evolution equation, PYTHIA, quantum chromodynamics: perturbation theory, info:eu-repo/classification/ddc/530, initial state, Monte Carlo
splitting, FOS: Physical sciences, parton: distribution function, 530, parton: showers, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), evolution equation, PYTHIA, quantum chromodynamics: perturbation theory, info:eu-repo/classification/ddc/530, initial state, Monte Carlo
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