GLE Example: 16.gle

[PDF file]

 

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size 6 2.4 ! 4*(x+x2)+2*d+d1 x+y+d2+d

include "feyn.gle"

x = 1
y = 0.75
x2 = 0.2
d = 0.1
d1 = 1
d2 = 0.5
r = 0.05

begin translate x+x2+d y+d2
    amove -x-x2 0
    @double x+x2 0
    @arrow (0.5*x+x2)/(2*(x+x2))
    @arrow (1.5*x+x2)/(2*(x+x2))
    amove x 0
    circle r fill black
    @photon2 0 -y -x 0
    circle r fill black
    amove 0 x
    @photon 0 0
    circle r fill black
end translate

begin translate 3*(x+x2)+d+d1 d2
    amove -x-x2 0
    @double x+x2 0
    @arrow 0.5
    momd = -momd
    @mom 0.5
    amove x 0
    circle r fill black
    photona = -photona
    photonn = -1
    @photon 0 x
    @mom 0.4
    circle r fill black
    photonn = -1
    @photon -x 0
    photona = -photona
    @mom 0.6
    momd = -momd
    circle r fill black
    amove 0 x+y
    @photon 0 x
    circle r fill black
end translate

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