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)
Choose kinematical variables

choose an independent (running) variable: Q² Q
choose values for Q², W, Q, step size and maximum value:
Q² (GeV/c)²
W (MeV)
Q (deg)
increment
upper value
click here

Change of model parameters:

O(q3) (all couplings in GeV-2)
0
+
-
d9
d8
d20
d21
O(q4) (all couplings in GeV-3)
Isospin 0
e48
e49
e50
e51
e52
e53
e112

Isospin +
e67
e68
e69
e71
e72
e73
e113
Isospin -
e70

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