GLE Example: 18.gle

[PDF file]

 

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size 5.2 2 ! 2*(x2+d) y1+y+2*d

include "feyn.gle"

x = 1
x1 = 2
x2 = 2.5
y = 0.7
y1 = 1.1
d = 0.1

r = 0.05
doublea = 0.05

begin translate x2+d d
    amove -x2 0
    @fermion x2 0
    amove -x1 0
    circle r fill black
    @photon -x y1
    circle r fill black
    set lwidth 0.06
    @fermion2 0 y1+y x y1
    set lwidth 0.03
    circle r fill black
    set lwidth 0.06
    @fermion2 0 y1-y -x y1
    set lwidth 0.03
    amove x1 0
    circle r fill black
    photona = -photona
    @photon x y1
end translate

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