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: (pi0,p) (pi0,n) (pi+,n) (pi-,p)
Model parameters: Born Rho Omega P33(1232)
P11(1440) D13(1520) S11(1535) S11(1650) F15(1680) D33(1700)
Change values of resonance couplings (relative to standard values):
P33(1232)
P11(1440)
S11(1535)
M1+
E1+
S1+
M1-
S1-
E0+
Choose kinematical variables

choose an independent (running) variable: Q² W Theta

choose values for Q², W, Q, step size and maximum value:
Q² (GeV/c)²
W (MeV)
Theta (deg)
increment
upper value

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