Zeitschrift für Physik C Particles and Fields

, Volume 69, Issue 2, pp 259–267 | Cite as

Small-X behaviour of the non-singlet structure function

  • B. I. Ermolaev
  • S. I. Manayenkov
  • M. G. Ryskin


The smallx behaviour of the non-singlet structure function is studied within the double logarithmic approximation (DLA) of perturbative QCD. Since there is neitherk T norθ ordering in the ladder Feynman graphs, the predicted non-singlet quark densities for the HERA kinematical range (x∼10−3) exceed the values calculated from the small-x approximation of the conventional Altarelli-Parisi evolution by a factor up to ten.


Transverse Momentum Feynman Graph Quark Distribution Mellin Amplitude Mellin Transformation 
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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • B. I. Ermolaev
    • 1
  • S. I. Manayenkov
    • 2
  • M. G. Ryskin
    • 2
  1. 1.Petersburg Physical-Technical InstituteSt. PetersburgRussia
  2. 2.Petersburg Nuclear Physics InstituteRussian Academy of Science, GatchinaSt. Petersburg DistrictRussia

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