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The European Physical Journal C

, Volume 51, Issue 4, pp 859–866 | Cite as

Perturbative Q2-power corrections to the structure function g1

  • B.I. Ermolaev
  • M. GrecoEmail author
  • S.I. Troyan
Regular Article - Theoretical Physics

Abstract

We show that (∼1/(Q2)k) power corrections to the spin structure function g1 at small x are generated perturbatively from the regulated infrared divergencies. We present the explicit series of such terms as well as the formulae for their resummation. These contributions are not included in the standard analysis of the experimental data. We argue that accounting for such terms can sizably change the impact of the power corrections conventionally attributed to the higher twists.

Keywords

Structure Function Anomalous Dimension Feynman Graph Power Correction High Twist 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2007

Authors and Affiliations

  1. 1.Ioffe Physico-Technical InstituteSt. PetersburgRussia
  2. 2.Dipartimento di Fisica and INFNRoma Italy
  3. 3.St. Petersburg Institute of Nuclear PhysicsGatchinaRussia

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