The 4He(e,e’p)3H reaction at JLab

  • Bodo Reitz for the Jefferson Lab Hall A Collaboration
Cold and hot nuclear matter


In the recent experiment E97-111 at Jefferson Lab the unseparated cross section for the (e,e’p) reaction on 4He was measured at recoil momenta up to 530 MeV/c. In the plane-wave impulse approximation, many calculations predict a sharp minimum in the cross section for recoil momenta around 450 MeV/c and show that its location is sensitive to the short-range part of the internucleon potential. However, reaction dynamic effects such as final-state interactions and meson-exchange currents can obscure such a minimum. To distinguish and study these effects data were taken at several different kinematic points. The preliminary results of the experiment are presented and compared to recent model calculations.


Model Calculation Recent Experiment Dynamic Effect Effect Data Recent Model 
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Copyright information

© Società Italiana di Fisica, Springer-Verlag 2004

Authors and Affiliations

  • Bodo Reitz for the Jefferson Lab Hall A Collaboration
    • 1
  1. 1.Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA

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