Recoil Polarization


P1, P2, P3 (in the scattering plane, P3 along the photon : default)
Px, Py, Pz (in the reaction plane, Pz along the photon) 
Px', Py', Pz' (in the reaction plane, Pz' along the pion) 
Pt, Pn, Pl (in the reaction plane, Pl along the outgoing nucleon)
(see further details on coordinate frames)

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 coordinate frame for recoil polarization:
  (P1,P2,P3)    (Px,Py,Pz)    (Px',Py',Pz')    (Pt,Pn,Pl) 
Choose polarization parameters for electron (h) and virtual photon (e):
h_el
epsilon

Choose kinematical variables

choose an independent (running) variable:  Q²   W   Theta   Phi

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


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