Moments of polarized parton distribution functions

  • V. Bernard
  • T. R. Hemmert
  • U.-G. Meißner
Conference paper

Abstract

We present novel results for the first moment of the spin-dependent structure function g 1 (x, Q 2) of the nucleon at “small” (Q 2 < 0.3 GeV2) photon virtuality in the framework of a relativistic formulation of baryon chiral perturbation theory. We perform a next-to-leading order calculation and obtain significant differences to previously found results based on the heavy-baryon approach for the proton and neutron.

Keywords

Plague 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • V. Bernard
    • 1
  • T. R. Hemmert
    • 2
  • U.-G. Meißner
    • 3
  1. 1.U. L. PasteurLPTStrasbourgFrance
  2. 2.Physik DepartmentTheoretische Physik T39GarchingGermany
  3. 3.FZ JülichIKP(Th)JülichGermany

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