Zeitschrift für Physik A Hadrons and Nuclei

, Volume 353, Issue 4, pp 411–414 | Cite as

Pion content of the nucleon as seen in the NA51 Drell-Yan experiment

  • H. Holtmann
  • N. N. Nikolaev
  • J. Speth
  • A. Szczurek
Hadron Physics

Abstract

In a recent CERN Drell-Yan experiment the NA51 group found a strong asymmetry of −u and ¯d densities in the proton atx ≌ 0.18. We interpret this result as a confirmation of the pion-induced sea in the nucleon.

PACS

13.85Qk 12.90+b 

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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • H. Holtmann
    • 1
  • N. N. Nikolaev
    • 1
    • 2
  • J. Speth
    • 1
  • A. Szczurek
    • 3
  1. 1.Forschungszentrum JülichInstitut für KernphysikJülichGermany
  2. 2.Landau Institute for Theoretical PhysicsMoscowRussia
  3. 3.Institute of Nuclear PhysicsKrakówPoland

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