Feynman rules for mesons, an axial-vector source and a 'weak I=7 scalar source' in weak χPT

Configuration:  "ChPTW3"
Lagrangians:  ChPTW3[2], ChPTW3[4]

•Feynman rules of fourth order in the chiral expansion

Notice that the Feynman rules below are from the N _ 19-N _ 27 part of the lagrangian. The N _ 5-N _ 13 part with a scalar source are obtained by the multiplication with a scalar S field and are thus the same as those without the scalar source.

You may need to make a change in "PhiStart.m" to calculate these Feynman rules. Look for "Including a scalar 'source' with momentum.".

•ϕPS

•Generation of coupling files

•ϕAS

•Generation of coupling files

•2ϕAS

•Generation of coupling files

•ϕS

•Generation of coupling files

•2ϕS

•Generation of coupling files

•3ϕS

•Generation of coupling files

Converted by Mathematica  (July 10, 2003)