MAID Multipoles

Multipoles

The multipoles can be given in 4 unique sets of isospin or charge channels
(click here for a larger image):

Further details can be found in D. Drechsel and L. Tiator, J. Phys. G 18 (1992) 449-497. (scanned version)

Type of the multipoles: (p(1/2), n(1/2), 3/2) (1/2, 0, 3/2) (0, +, - ) charge channels

Choose pion angular momentum l :

Choose multipoles: El+ El- Ml+ Ml- Ll+ Ll- Sl+ Sl-

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):
Isospin 3/2
P33(1232)			S31(1620)		D33(1700)
M₁₊	E₁₊	S₁₊	E₀₊	S₀₊	M_2-	E_2-	S_2-

Proton Isospin 1/2

P11(1440)

D13(1520)

S11(1535)

S11(1650)

F15(1680)

M_1-

S_1-

M_2-

E_2-

S_2-

E₀₊

S₀₊

E₀₊

S₀₊

M_3-

E_3-

S_3-

Neutron Isospin 1/2