42 lines
1.5 KiB
TeX
42 lines
1.5 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_penguin_diagram} \centering
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\begin{fmfgraph*}(300,130)
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\fmfstraight
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\fmfleft{l0,l1,l2,l3,l4}
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\fmfright{r0,r1,r2,r3,r4}
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\fmf{phantom}{l4,a1,a2,r4}
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\fmf{phantom}{l3,b1,r3}
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\fmf{phantom}{l2,c1,r2}
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\fmf{phantom}{l1,d1,r1}
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\fmf{phantom}{l0,e1,e2,r0}
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\fmffreeze
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\fmf{fermion,label=$b$,tension=1,label.side=right}{l4,a1}
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\fmf{photon,label=$W^-$,tension=1,label.side=right}{a1,a2}
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\fmf{fermion,label=$s$, tension=1}{a2,r4}
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\fmf{fermion,right=0.5,tension=0.5}{a1,c1,a2}
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\fmfv{label=${u}\comma {c}\comma {t}$,label.angle=80}{c1}
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\fmf{photon,label=$Z\comma\gamma$,tension=0.7}{c1,d1}
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\fmf{fermion,label=$l^-$,tension=-0.475,label.side=left}{d1,r2}
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\fmf{fermion,label=$l^+$,tension=0.6}{r0,d1}
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% \fmf{phantom, tension = 1.5}{l2,l1}
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\end{fmfgraph*}
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\end{fmffile}
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\pagestyle{empty}
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\end{document} |