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Moments of polarized parton distribution functions

  • V. Bernard
  • T. R. HemmertEmail author
  • U.-G. Meißner
Article
  • 19 Downloads

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

Distribution Function Perturbation Theory Structure Function Relativistic Formulation Photon Virtuality 
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References

  1. 1.
    S.B. Gerasimov, Yad. Fiz. 2, 598 (1965)Google Scholar
  2. 2.
    V. Bernard, N. Kaiser, Ulf-G. Meißner, Phys. Rev. D 48, 3062 (1993).CrossRefGoogle Scholar
  3. 3.
    X.D. Ji, J. Osborne, J. Phys. G 27, 127 (2001).CrossRefGoogle Scholar
  4. 4.
    X.D. Ji, C.W. Kao, J. Osborne, Phys. Lett. B 472, 1 (2000).CrossRefGoogle Scholar
  5. 5.
    V. Bernard, T.R. Hemmert, U.-G. Meißner, Phys. Lett. B 545, 105 (2002).CrossRefGoogle Scholar
  6. 6.
    T. Becher, H. Leutwyler, Eur. Phys. J. C 9, 643 (1999).CrossRefGoogle Scholar
  7. 7.
    V.D. Burkert, Phys. Rev. D 63, 097904 (2001).CrossRefGoogle Scholar
  8. 8.
    V. Bernard, T.R. Hemmert, U.-G. Meißner, in preparation.Google Scholar

Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  1. 1.U. L. Pasteur, LPTStrasbourgFrance
  2. 2.Theoretische Physik T39, Physik DepartmentTU MünchenGarchingGermany
  3. 3.FZ JülichIKP(Th)JülichGermany

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