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Gösta Gustafson. Photo.

Gösta Gustafson

Post retirement professor

Gösta Gustafson. Photo.

Multiple Interactions and Saturation in High Energy Collisions

Author

  • Gösta Gustafson

Editor

  • Yu. L. Dokshitzer
  • P. Lévai
  • J. Nyíri

Summary, in English

Energy conservation is a large part of the NLO corrections to BFKL. A formalism is presented which includes effects of energy-momentum conservation in the dipole formalism in transverse coordinate space. Energy conservation gives a very strong suppression at small x, which implies that the effect of multi-pomeron exchange and saturation are pushed to very small x-values or very high energies. Perturbative QCD and PDFs from HERA can describe jets and Et-flow in high energy pp collisions, but the multiplicity distributions are much more sensitive to non-perturbative effects. Analyses of minimum bias and underlying events show that colours appear to combine to give strings which are as short as possible, in a way very different from e+e- annihilation. This leads to important questions about the properties of the pomeron, the relation between high multiplicity events and diffraction, and the applicability of the AGK cutting rules.

Publishing year

2006

Language

English

Pages

167-179

Publication/Series

[Host publication title missing]

Document type

Conference paper

Publisher

World Scientific Publishing

Topic

  • Subatomic Physics

Conference name

Memorial Workshop Devoted to the 75th Birthday of V N Gribov

Conference date

2005-05-22 - 2005-05-24

Status

Published

ISBN/ISSN/Other

  • ISBN: 981-256-756-9