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Time-like compton scattering and the Bethe-Heitler process

  • Stephen R. Cotanch
III-2/Theory
  • 26 Downloads

Abstract

Arguments are presented for p(γ,e+e)p measurements to obtain new information about the off-shell time-like nucleon form factors, especially in the φ meson region governing the φ N couplings gV,T φ N N . Theoretical predictions based upon a Quantum Hadrodynamic model and vector meson dominance are highlighted for both the proton form factor and the time-like Compton scattering cross section. The Bethe-Heitler process is also calculated but is only important at low momentum transfer |t| permitting a novel high |t| φ enhancement in the Compton cross section related to nucleon strangeness to emerge.

PACS: 12.40.Nn Regge theory – 12.40.Vv Vector-meson dominance – 13.40.Gp Electromagnetic form factors – 13.40.Hq Electromagnetic decays

Keywords

Elementary Particle Form Factor Theoretical Prediction Momentum Transfer Vector Meson 
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.

Copyright information

© Springer-Verlag, Società Italiana di Fisica 2005

Authors and Affiliations

  • Stephen R. Cotanch
    • 1
  1. 1.Department of Physics, North Carolina State University, Raleigh NC 27695-8202USA

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