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latex:feynman [2023/02/05 12:43] – [Top quark pair production] iwnlatex:feynman [2023/02/05 12:44] – [Top quark pair production] iwn
Line 617: Line 617:
 \large \large
 \begin{fmffile}{feyngraph} \begin{fmffile}{feyngraph}
-  \begin{fmfgraph*}(120,70)+  \begin{fmfgraph*}(120,75)
     \fmfleft{i2,i1}     \fmfleft{i2,i1}
     \fmfright{o2,o1}     \fmfright{o2,o1}
     \fmftop{t}     \fmftop{t}
 +    \fmfshift{4 left}{i1}
 +    \fmfshift{2 left}{i2}
     \fmfshift{5 up}{t}     \fmfshift{5 up}{t}
     % skeleton     % skeleton
     \fmf{phantom}{i1,v1,i2}     \fmf{phantom}{i1,v1,i2}
     \fmf{phantom}{o1,v2,o2}     \fmf{phantom}{o1,v2,o2}
-    \fmf{phantom}{v1,v2}+    \fmf{phantom,tension=1.2}{v1,v2}
     \fmffreeze     \fmffreeze
     % main     % main
-    \fmf{fermion}{i1,g} +    \fmf{gluon,tension=0.8}{g,i1} 
-    \fmf{plain,tension=2.8}{g,v1} +    \fmf{fermion}{v1,g} 
-    \fmf{fermion}{v1,i2} +    \fmf{gluon}{v1,i2} 
-    \fmf{gluon,tension=0}{t,g}+    \fmf{fermion,tension=0}{g,t}
     \fmf{gluon}{v1,v2}     \fmf{gluon}{v1,v2}
     \fmf{fermion}{o2,v2,o1}     \fmf{fermion}{o2,v2,o1}
     % labels     % labels
-    \fmflabel{$q$}{i1} +    \fmfv{l.d=4,l=$g$}{i1} 
-    \fmflabel{$\overline{q}$}{i2}+    \fmfv{l.d=6,l=$g$}{i2} 
 +    \fmfv{l.d=5,l.a=25,l=$q$}{t}
     \fmflabel{$\bar{\text{t}}$}{o2}     \fmflabel{$\bar{\text{t}}$}{o2}
     \fmflabel{$\text{t}$}{o1}     \fmflabel{$\text{t}$}{o1}
Line 694: Line 697:
 \large \large
 \begin{fmffile}{feyngraph} \begin{fmffile}{feyngraph}
-  \begin{fmfgraph*}(120,75)+  \begin{fmfgraph*}(120,70)
     \fmfleft{i2,i1}     \fmfleft{i2,i1}
     \fmfright{o2,o1}     \fmfright{o2,o1}
     \fmftop{t}     \fmftop{t}
-    \fmfshift{4 left}{i1} 
-    \fmfshift{2 left}{i2} 
     \fmfshift{5 up}{t}     \fmfshift{5 up}{t}
     % skeleton     % skeleton
     \fmf{phantom}{i1,v1,i2}     \fmf{phantom}{i1,v1,i2}
     \fmf{phantom}{o1,v2,o2}     \fmf{phantom}{o1,v2,o2}
-    \fmf{phantom,tension=1.2}{v1,v2}+    \fmf{phantom}{v1,v2}
     \fmffreeze     \fmffreeze
     % main     % main
-    \fmf{gluon,tension=0.8}{g,i1} +    \fmf{fermion}{i1,g} 
-    \fmf{fermion}{v1,g} +    \fmf{plain,tension=2.8}{g,v1} 
-    \fmf{gluon}{v1,i2} +    \fmf{fermion}{v1,i2} 
-    \fmf{fermion,tension=0}{g,t}+    \fmf{gluon,tension=0}{t,g}
     \fmf{gluon}{v1,v2}     \fmf{gluon}{v1,v2}
     \fmf{fermion}{o2,v2,o1}     \fmf{fermion}{o2,v2,o1}
     % labels     % labels
-    \fmfv{l.d=4,l=$g$}{i1} +    \fmflabel{$q$}{i1} 
-    \fmfv{l.d=6,l=$g$}{i2}+    \fmflabel{$\overline{q}$}{i2}
     \fmfv{l.d=5,l.a=25,l=$q$}{t}     \fmfv{l.d=5,l.a=25,l=$q$}{t}
     \fmflabel{$\bar{\text{t}}$}{o2}     \fmflabel{$\bar{\text{t}}$}{o2}
latex/feynman.txt · Last modified: by iwn

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