AroundConnect

2014

Parton distribution functions in the context of parton showers

Nagy, Zoltan, Soper, Davison E.

Understand

When the initial state evolution of a parton shower is organized according to the standard "backward evolution'' prescription, ratios of parton distribution functions appear in the splitting probabilities.

  • The shower thus organized evolves from a hard scale to a soft cutoff scale.
  • At the end of the shower, one expects that only the parton distributions at the soft scale should affect the results.
  • The other effects of the parton distributions should have cancelled.

Built on

Similar

  • T. Sjostrand, A Model for Initial State Parton Showers

    1985

    Cited alongside, same era.

  • T. D. Gottschalk, Backwards Evolved Initial State Parton Showers

    1986

    Cited alongside, same era.

  • S. Catani, B. R. Webber and G. Marchesini, QCD coherent branching and semiinclusive processes at large x

    1991

    Cited alongside, same era.

  • Z. Nagy and D. E. Soper, Parton showers with quantum interference

    Original

    2007

    Cited alongside, same era.

  • Z. Nagy and D. E. Soper, A parton shower based on factorization of the quantum density matrix

    Cited in the paper.

  • The code is available at http://www.desy.de/ ∼ \sim znagy/deductor/ and http://pages.uoregon.edu/soper/deductor/

    Cited in the paper.

  • Z. Nagy and D. E. Soper, Ordering variable for parton showers

    Cited in the paper.

Then

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