Target Polarization


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

Channel: (pi0,p) (pi0,n) (pi+,n) (pi-,p)
Model parameters: Born Rho Omega P33M(1232) P33E(1232)

P11(1440) D13(1520) S11(1535) S11(1650) F15(1680) D33(1700)


Choose coordinate frame for polarization: (Px,Py,Pz) (Px',Py',Pz') (Pt,Pn,Pl) (P1,P2,P3)
Choose kinematical variables:

Enter values for transverse virtual photon polarization epsilon and electron polarization h_el:

[ Epsilon ] [ h_el ]

Enter (lower) values for Q², W, Theta and Phi:

[ Q² (GeV/c)² ] [ W (MeV) ] [ Theta (deg) ] [ Phi (deg) ]

Choose one independent (running) variable: W Theta Phi

[increment] [upper value]


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