Off-Shell Effects in the Nucleon-Nucleon System

  • Leon Heller
Part of the Lecture Notes in Physics book series (LNP, volume 87)


When studying the bremsstrahlung reaction
$$ A + B \to C + D + \gamma $$
we shall suppose that the scattering amplitude for the corresponding nonradiative process
$$ A + B \to C + D$$
is already known. The latter will sometimes be referred to as “elastic” scattering, but it is not necessary that the final particles (C and D) be the same as the initial ones (A and B). For particles with spin, this requires a knowledge of each of the independent spin amplitudes, although for some purposes., lesser information — such as the unpolarized cross section — may suffice. It will also be assumed that the static electromagnetic moments of the particles A, B, C, and D are known. Together with nonradiative amplitude(s), this will be referred to as “on-shell information”.


Pion Exchange Couple Channel Calculation Unpolarized Cross Section Bremsstrahlung Cross Section Photon Angle 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1978

Authors and Affiliations

  • Leon Heller
    • 1
  1. 1.Theoretical DivisionLos Alamos Scientific LaboratoryLos AlamosUSA

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