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Quark-hadron duality and the nuclear EMC effect

  • W. Melnitchouk
  • K. Tsushima
  • A.W. Thomas

Abstract:

Recent data on polarized proton knockout reactions off 4He nuclei suggest a small but nonzero modification of proton electromagnetic form factors in medium. Using model-independent relations derived on the basis of quark-hadron duality, we relate the medium modification of the form factors to the modification at large x of the deep-inelastic structure function of a bound proton. This places strong constraints on models of the nuclear EMC effect which assume a large deformation of the intrinsic structure of the nucleon in medium.

PACS. 13.60.Hb Total and inclusive cross-sections (including deep-inelastic processes) – 13.40.Gp Electromagnetic form factors – 14.20.Dh Protons and neutrons 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2002

Authors and Affiliations

  • W. Melnitchouk
    • 1
  • K. Tsushima
    • 2
  • A.W. Thomas
    • 2
  1. 1.Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA 23606, USAUS
  2. 2.Special Research Centre for the Subatomic Structure of Matter, and Department of Physics and Mathematical Physics, Adelaide University, 5005, AustraliaAU

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