Differential Cross Sections

for unpolarized target and without recoil polarization

The following notation of the coincidence cross section will be used in our calculations. Further details can be found in D. Drechsel and L. Tiator, J. Phys. G 18 (1992) 449-497. (scanned version)
(click here for a larger image)

On this page only the individual 2-fold cross sections dsT, dsL, dsLT, dsTT and dsLT' will be calculated. For a calculation of the complete 5-fold differential cross section see our alternative page.
Note: The longitudinal cross sections (dsL, dsLT and dsLT') differ from those in Drechsel and Tiator, J. Phys. G18 (1992) 449. Here we do not use the longitudinal polarization epsilon_L!!

Channel:  proton 
Model input (on and off):
Background: Born  r (770) w(783)
Resonances:  S11(1535)  S11(1650)  P11(1710) P13(1720)
D13(1520)  D13(1700)  D15(1675) F15(1680)

Vector meson exchange: r and w poles r and w Regge trajectories 
Choose kinematical variables:

choose an independent (running) variable: Qh
choose values for W, Qh, step size and maximum value:
W (MeV)
Qh (deg)
upper value

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