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A model of non-perturbative gluon emission in an initial state parton shower

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arxiv 0712.1199 v3 pith:7MWJ4PZP submitted 2007-12-07 hep-ph

Stefan Gieseke , Michael H. Seymour , Andrzej Siodmok This is my paper · ORCID
classification hep-ph
keywords non-perturbativepartoninitialmodelshowerstatealgorithmcombining
verification ladder T0 review T1 audit T2 compute T3 formal
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We consider a model of transverse momentum production in which non-perturbative smearing takes place throughout the perturbative evolution, by a simple modification to an initial state parton shower algorithm. Using this as the important non-perturbative ingredient, we get a good fit to data over a wide range of energy. Combining it with the non-perturbative masses and cutoffs that are a feature of conventional parton showers also leads to a reasonable fit. We discuss the extrapolation to the LHC.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Non-Perturbative Contributions to Low Transverse Momentum Drell-Yan Pair Production Using the Parton Branching Method

    hep-ph 2024-12 conditional novelty 5.0 of 10

    The fitted intrinsic-kT width obtained from CASCADE3 Drell-Yan simulations is independent of the pair invariant mass at LHC energies, consistent with the slow scale dependence of the non-perturbative Sudakov form fact...

  2. Interplay of intrinsic motion of partons and soft gluon emissions in Drell-Yan production studied with PYTHIA

    hep-ph 2024-12 conditional novelty 4.0 of 10

    The sqrt(s)-dependent intrinsic-kT width in PYTHIA 8 is traced to soft gluon emissions controlled by the ISR cutoff pT0Ref, with the fitted width increasing nearly linearly with pT0Ref.

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