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 the complete 5-fold
differential cross section and in addition
the individual 2-fold cross sections dsT, dsL, dsLT, dsTT and SLT' will
be calculated using electron kinematics. For virtual photon kinematics
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) S31(1620) S11(1650) F15(1680) D33(1700)
Change of S-wave low-energy
corrections and type of pi-N coupling (click
here for details)
E0+
S0+
PS-PV mixing range parameter Lambda
Change
values of resonance couplings (relative to standard values):
P33(1232)
S31(1620)
D33(1700)
M1+
E1+
S1+
E0+
S0+
M2-
E2-
S2-
P11(1440)
D13(1520)
S11(1535)
S11(1650)
F15(1680)
M1-
S1-
M2-
E2-
S2-
E0+
S0+
E0+
S0+
M3-
E3-
S3-
Choose kinematical variables for
polarization definition
Enter values for electron beam
energy Ei, scattered electron energy Ef,
electron scattering angle Qeland
electron polarization hel:
Ei (MeV)
Ef (MeV)
Qel
(deg)
hel
choose an independent (running)
variable: QF
choose values for Q,
F, step size and maximum value:
