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latex:feynman [2023/02/05 12:18] – [Diffractive proton-proton collisions] iwnlatex:feynman [2023/02/05 12:44] – [Top quark pair production] iwn
Line 540: Line 540:
     \fmfleft{i2,i1}     \fmfleft{i2,i1}
     \fmfright{o2,o1}     \fmfright{o2,o1}
 +    \fmfshift{2 left}{i1}
     \fmf{fermion}{o2,v2,o1}     \fmf{fermion}{o2,v2,o1}
-    \fmf{gluon}{i2,v1,i1}+    \fmf{gluon}{v1,i1} 
 +    \fmf{gluon}{v1,i2}
     \fmf{gluon,label=$g$}{v1,v2}     \fmf{gluon,label=$g$}{v1,v2}
-    \fmflabel{$g$}{i1} +    % labels 
-    \fmflabel{$g$}{i2}+    \fmfv{l.d=4,l=$g$}{i1} 
 +    \fmfv{l.d=6,l=$g$}{i2}
     \fmflabel{$\overline{\text{t}}$}{o2}     \fmflabel{$\overline{\text{t}}$}{o2}
     \fmflabel{t}{o1}     \fmflabel{t}{o1}
Line 560: Line 563:
 \begin{fmffile}{feyngraph} \begin{fmffile}{feyngraph}
   \begin{fmfgraph*}(110,60)   \begin{fmfgraph*}(110,60)
-    \fmfleft{i2,i1}  +    \fmfleft{i2,i1} 
-    \fmfright{o2,o1}  +    \fmfright{o2,o1} 
-    \fmf{gluon}{v1,i1} +    % main 
 +    \fmf{gluon}{v1,i1}
     \fmf{fermion}{v1,o1}     \fmf{fermion}{v1,o1}
     \fmf{gluon}{i2,v2}     \fmf{gluon}{i2,v2}
     \fmf{fermion}{o2,v2}     \fmf{fermion}{o2,v2}
     \fmf{fermion,label=t}{v2,v1}     \fmf{fermion,label=t}{v2,v1}
 +    % labels
     \fmflabel{$g$}{i2}     \fmflabel{$g$}{i2}
     \fmflabel{$g$}{i1}     \fmflabel{$g$}{i1}
Line 586: Line 591:
     \fmfleft{i2,i1}     \fmfleft{i2,i1}
     \fmfright{o2,o1}     \fmfright{o2,o1}
 +    % main
     \fmf{fermion}{i1,v1,i2}     \fmf{fermion}{i1,v1,i2}
     \fmf{fermion}{o2,v2,o1}     \fmf{fermion}{o2,v2,o1}
     \fmf{gluon,label=$g$,label.side=right,label.dist=10}{v2,v1}     \fmf{gluon,label=$g$,label.side=right,label.dist=10}{v2,v1}
 +    % labels
     \fmflabel{$q$}{i1}     \fmflabel{$q$}{i1}
     \fmflabel{$\overline{q}$}{i2}     \fmflabel{$\overline{q}$}{i2}
Line 604: Line 611:
  
  
-With jets:+With radiated quarks or gluons that will form hard jets:
  
 <WRAP group><WRAP half column lo> <WRAP group><WRAP half column lo>
Line 610: Line 617:
 \large \large
 \begin{fmffile}{feyngraph} \begin{fmffile}{feyngraph}
-  \begin{fmfgraph*}(125,75)+  \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}
 +    % 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
-    \fmfshift{5 left}{i1} +    % main
-    \fmfshift{5 up}{i1,t}+
     \fmf{gluon,tension=0.8}{g,i1}     \fmf{gluon,tension=0.8}{g,i1}
     \fmf{fermion}{v1,g}     \fmf{fermion}{v1,g}
Line 626: Line 636:
     \fmf{gluon}{v1,v2}     \fmf{gluon}{v1,v2}
     \fmf{fermion}{o2,v2,o1}     \fmf{fermion}{o2,v2,o1}
-    \fmflabel{$g$}{i1} +    % labels 
-    \fmflabel{$g$}{i2} +    \fmfv{l.d=4,l=$g$}{i1} 
-    \fmflabel{$\overline{\text{t}}$}{o2} +    \fmfv{l.d=6,l=$g$}{i2} 
-    \fmflabel{t}{o1}+    \fmfv{l.d=5,l.a=25,l=$q$}{t} 
 +    \fmflabel{$\bar{\text{t}}$}{o2} 
 +    \fmflabel{$\text{t}$}{o1}
   \end{fmfgraph*}   \end{fmfgraph*}
 \end{fmffile} \end{fmffile}
Line 645: Line 657:
 \large \large
 \begin{fmffile}{feyngraph} \begin{fmffile}{feyngraph}
-  \begin{fmfgraph*}(125,75)+  \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}
 +    % 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
-    %\fmfshift{5 left}{i1} +    % main
-    %\fmfshift{5 up}{i1,t}+
     \fmf{gluon,tension=0.8}{g,i1}     \fmf{gluon,tension=0.8}{g,i1}
     \fmf{fermion}{v1,g}     \fmf{fermion}{v1,g}
Line 661: Line 676:
     \fmf{gluon}{v1,v2}     \fmf{gluon}{v1,v2}
     \fmf{fermion}{o2,v2,o1}     \fmf{fermion}{o2,v2,o1}
-    \fmflabel{$g$}{i1} +    % labels 
-    \fmflabel{$q$}{i2} +    \fmfv{l.d=4,l=$g$}{i1} 
-    \fmflabel{$\overline{\text{t}}$}{o2} +    \fmfv{l.d=6,l=$q$}{i2} 
-    \fmflabel{t}{o1}+    \fmfv{l.d=5,l.a=25,l=$q$}{t} 
 +    \fmflabel{$\bar{\text{t}}$}{o2} 
 +    \fmflabel{$\text{t}$}{o1}
   \end{fmfgraph*}   \end{fmfgraph*}
 \end{fmffile} \end{fmffile}
Line 684: Line 701:
     \fmfright{o2,o1}     \fmfright{o2,o1}
     \fmftop{t}     \fmftop{t}
 +    \fmfshift{5 up}{t}
 +    % 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}{v1,v2}
     \fmffreeze     \fmffreeze
 +    % main
     \fmf{fermion}{i1,g}     \fmf{fermion}{i1,g}
     \fmf{plain,tension=2.8}{g,v1}     \fmf{plain,tension=2.8}{g,v1}
Line 694: Line 714:
     \fmf{gluon}{v1,v2}     \fmf{gluon}{v1,v2}
     \fmf{fermion}{o2,v2,o1}     \fmf{fermion}{o2,v2,o1}
 +    % labels
     \fmflabel{$q$}{i1}     \fmflabel{$q$}{i1}
     \fmflabel{$\overline{q}$}{i2}     \fmflabel{$\overline{q}$}{i2}
-    \fmflabel{$\overline{\text{t}}$}{o2} +    \fmfv{l.d=5,l.a=25,l=$g$}{t} 
-    \fmflabel{t}{o1}+    \fmflabel{$\bar{\text{t}}$}{o2} 
 +    \fmflabel{$\text{t}$}{o1}
   \end{fmfgraph*}   \end{fmfgraph*}
 \end{fmffile} \end{fmffile}
Line 703: Line 725:
 </WRAP><WRAP half column> </WRAP><WRAP half column>
 \\ \\ \\ \\
-{{ latex:gqttbar_quark.png ? 220 }}+{{ latex:qqttbar_gluon.png ? 220 }}
 \\ \\ \\ \\
 </WRAP></WRAP> </WRAP></WRAP>
latex/feynman.txt · Last modified: 2023/06/06 18:16 by iwn

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