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Diffractive parton distributions from the analysis with higher twist

Krzysztof Golec-Biernat1,2,* and Agnieszka Łuszczak1,†

  • 1Institute of Nuclear Physics Polish Academy of Sciences, Cracow, Poland
  • 2Institute of Physics, University of Rzeszów, Rzeszów, Poland

  • *golec@ifj.edu.pl
  • †agnieszka.luszczak@ifj.edu.pl
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Phys. Rev. D 76, 114014 – Published 20 December, 2007

DOI: https://doi.org/10.1103/PhysRevD.76.114014

Abstract

Diffractive parton distributions of the proton are determined from fits to diffractive data from HERA. In addition to the twist-2 contribution, the twist-4 contribution from longitudinally polarized virtual photons is considered, which is important in the region of small diffractive masses. A new prediction for the longitudinal diffractive structure function is presented which differs significantly from that obtained in the pure twist-2 analyses.

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Phys. Rev. D 76, 114014– Published 20 December, 2007
  • Received 18 May 2007

© 2007 American Physical Society

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