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A study of the polarized structure function \(g_1^{\rm p}(x,Q^2)\) and the polarized gluon distribution \(\Delta g(x,Q^2)\) at HERA

  • A. De Roeck
  • A. Deshpande
  • V.W. Hughes
  • J. Lichtenstadt
  • G. Rädel
Theoretical physics

Abstract.

We present estimates of possible data on spin-dependent asymmetries in inclusive scattering of high energy polarized electrons by high energy polarized protons at HERA with their statistical errors and discuss systematic errors. We show that these data will provide important information on the low-x behavior of the polarized structure function \(g_1\), and will reduce the uncertainty in the determination of the first moment of the polarized gluon distribution \(\Delta g(x,Q^2)\) obtained from the QCD analysis of \(g_1\) in NLO. Furthermore, using asymmetries for di-jet events from a polarized HERA would substantially reduce the uncertainty in the shape of \(\Delta g(x,Q^2)\). Use of the information on \(\Delta g(x,Q^2)\) from the di-jet analysis in conjunction with the NLO QCD analysis of \(g_1\) will provide an accurate determination of \(\Delta g(x,Q^2)\) and its first moment.

Keywords

Systematic Error Structure Function Statistical Error Accurate Determination Gluon Distribution 
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 Berlin Heidelberg 1999

Authors and Affiliations

  • A. De Roeck
    • 1
  • A. Deshpande
    • 3
  • V.W. Hughes
    • 3
  • J. Lichtenstadt
    • 4
  • G. Rädel
    • 2
  1. 1. Deutsches Elektronen-Synchroton DESY, Notkestr. 85, 22603 Hamburg, Germany DE
  2. 2. CERN, Div. PPE, 1211 Genève 23, Switzerland CH
  3. 3. Department of Physics, Yale University, New Haven, CT 06520, USA US
  4. 4. School of Physics and Astronomy, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel IL

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