GLE Example: 7.gle

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size 10.7 1.7 ! 4*(x1+y)+3*d1+2*d 2*(y+d)

include "feyn.gle"

x = 1
y = 0.75
x1 = 1.5
d = 0.1
d1 = 0.5
a = 0.5
r = 0.05
doublea = 0.05

begin translate y+d y+d ! a
    amove -y 0
    set lwidth 0.06
    @fermion y 0
    amove 0 0
    circle r fill black
    @fermion2 -0.5*y -0.5*y 0 -y
    @fermion2 0.5*y -0.5*y 0 0
    set lwidth 0.03
    @fermion2 -0.5*y 0.5*y 0 y
    @fermion2 0.5*y 0.5*y 0 0
end translate

begin translate 3*y+d1+d y+d ! b
    amove -y 0
    set lwidth 0.06
    @fermion y 0
    amove 0 0
    circle r fill black
    set lwidth 0.03
    @fermion2 -0.5*y 0.5*y 0 y
    @fermion2 0.5*y 0.5*y 0 0
    @fermion2 -0.5*y -0.5*y 0 -y
    @fermion2 0.5*y -0.5*y 0 0
end translate

begin translate 4*y+x1+2*d1+d y+d ! c
    amove -x1 0
    set lwidth 0.06
    @fermion x1 0
    set lwidth 0.03
    amove x 0
    circle r fill black
    @fermion2 0 y -x 0
    circle r fill black
    @fermion2 0 -y x 0
end translate

begin translate 4*y+3*(x1+d1)+d y-0.5*x+d ! d
    amove -x1 0
    set lwidth 0.06
    @fermion x1 0
    set lwidth 0.03
    amove 0 x
    @fermion2 (1+a)*0.5*x (1+a)*0.5*x x 0
    circle r fill black
    @fermion2 (1-a)*0.5*x (1-a)*0.5*x 0 x
    circle r fill black
    photona = -photona
    photonn = -1
    @photon -x 0
    photona = -photona
    circle r fill black
end translate

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