38 lines
1.3 KiB
TeX
38 lines
1.3 KiB
TeX
\documentclass{article}
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\usepackage[paperheight=60mm,paperwidth=95mm, margin=5mm]{geometry}
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\usepackage{feynmp-auto}
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\addtolength{\oddsidemargin}{-10mm}
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\addtolength{\evensidemargin}{-10mm}
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% commas in feynmp sometimes lead to strange errors, use \comma instead
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\DeclareMathSymbol{\comma}{\mathpunct}{letters}{"3B}
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\begin{document}\LARGE
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\centering
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\begin{fmffile}{bsll_box_diagram} \centering
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\begin{fmfgraph*}(300,130)
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\fmfstraight
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\fmfleft{l1,l2,l3,l4}
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\fmfright{r1,r2,r3,r4}
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\fmf{phantom}{l4,q1,q2,r4}
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\fmf{phantom}{l2,m1,m2,r2}
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\fmf{phantom}{l1,p1,p2,p3,p4,r1}
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\fmffreeze
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\fmf{fermion,label=$b$,tension=10.0}{l4,q1}
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\fmf{fermion,label=$u\comma c \comma t$,tension=10.0}{q1,q2}
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\fmf{fermion,label=$s$,tension=10.0}{q2,r4}
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\fmf{photon,label=$W^+$,tension=1}{q1,m1}
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\fmf{photon,label=$W^-$,tension=1}{q2,m2}
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%TODO!
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\fmf{fermion,label=$\nu$,tension=0.7}{m1,m2}
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\fmf{fermion,label=$\l^+$, label.side=left}{p3,m1}
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\fmf{fermion,label=$\l^-$}{m2,r1}
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\end{fmfgraph*}
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\end{fmffile}
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\pagestyle{empty}
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\end{document} |