Overleaf

Reimplementation of diagrams from https://www.overleaf.com/learn/latex/Feynman_diagrams

from pyfeyn2.feynmandiagram import FeynmanDiagram, Leg, Propagator, Vertex
from pyfeyn2.render.all import AllRender
from pyfeyn2.auto.position import feynman_adjust_points

v1 = Vertex().with_xy(-1, 0)
v2 = Vertex().with_xy(1, 0)

fd = FeynmanDiagram().add(
    v1,
    v2,
    Propagator().connect(v1, v2).with_type("photon").put_style('opacity',0.2).put_style('color','red').with_momentum("$k$"),
    Leg().with_target(v1).with_xy(-2, 1).with_type("fermion").with_incoming().with_label("$e^+$").put_style('opacity',0.2),
    Leg().with_target(v1).with_xy(-2, -1).with_type("fermion").with_incoming().with_label("$e^-$").put_style('opacity',0.2),
    Leg().with_target(v2).with_xy(2, 1).with_type("fermion").with_outgoing().with_label("$\\mu^+$").put_style('opacity',0.2),
    Leg().with_target(v2).with_xy(2, -1).with_type("fermion").with_outgoing().with_label("$\\mu^-$").put_style('opacity',0.9),
)
ar = AllRender(fd)
ar.render()

pyx:

feynmp:

tikz:

dot:

feynman:

mpl:

ascii:









*                                      *
 ->                                 >--
   -- e+                           -
     --                      +  ---
       >-                      >
         *~~~~~~~~~~~~~~~~~~~*-
       >-                      >
     --                         ----
e- --                              -
 ->                                 >--
*                                      *

unicode:









*                                      *
 ↘↘                                 ↗↗↗
   ↘↘ e^                       +   ↗
     ↘↘ +                    μ^ ↗↗↗
       ↘↘                      ↗
         *~~~~~~~~~~~~~~~~~~~*↘
       ↗↗                      ↘
  -  ↗↗                         ↘↘↘μ^
e^ ↗↗                              ↘ -
 ↗↗                                 ↘↘↘
*                                      *

v1 = Vertex().with_xy(-1, 0)
v2 = Vertex().with_xy(1, 0)

fd = FeynmanDiagram().add(
    v1,
    v2,
    Propagator().connect(v1, v2).with_type("fermion"),
    Leg().with_target(v1).with_xy(-2, 1).with_type("fermion").with_incoming(),
    Leg().with_target(v1).with_xy(-2, -1).with_type("photon").with_incoming(),
    Leg().with_target(v2).with_xy(2, 1).with_type("fermion").with_outgoing(),
    Leg().with_target(v2).with_xy(2, -1).with_type("photon").with_outgoing(),
)
ar = AllRender(fd)
ar.render()

pyx:

feynmp:

tikz:

dot:

feynman:

mpl:

ascii:









*                                      *
 ->                                 >--
   --                              -
     --                         ---
       >-                      >
         *->---->---->---->--*~
       ~~                      ~
     ~~                         ~~~
   ~~                              ~
 ~~                                 ~~~
*                                      *

unicode:









*                                      *
 ↘↘                                 ↗↗↗
   ↘↘                              ↗
     ↘↘                         ↗↗↗
       ↘↘                      ↗
         *→→→→→→→→→→→→→→→→→→→*~
       ~~                      ~
     ~~                         ~~~
   ~~                              ~
 ~~                                 ~~~
*                                      *

v1 = Vertex().with_xy(-2, -2)
v2 = Vertex().with_xy(2, -2)

i1 = Vertex().with_xy(-2, 2)
o1 = Vertex().with_xy(2,  2)
o2 = Vertex().with_xy(2,  1)
o3 = Vertex().with_xy(2,  0)

p1 = Vertex().with_xy(0,  2)
p2 = Vertex().with_xy(1,  1)


fd = FeynmanDiagram().add(
    v1,
    v2,
    Propagator().connect(v1,v2).with_type("fermion").with_label("$d$").with_tension(0),
    Leg().with_target(v1).with_point(v1).with_type("phantom").with_incoming(),
    Leg().with_target(v2).with_point(v2).with_type("phantom").with_outgoing(),

    i1,p1,p2,o1,o2,o3,
    Propagator().connect(p2,p1).with_type("boson").with_label("$W^+$"),
    Leg(label=r"$\bar{b}$").with_target(p1).with_point(i1).with_type("fermion").with_incoming(),
    Leg(label=r"$\bar{c}$").with_target(p1).with_point(o1).with_type("fermion").with_outgoing(),
    Leg(label="$c$").with_target(p2).with_point(o2).with_type("fermion").with_outgoing(),
    Leg(label=r"$\bar{s}$").with_target(p2).with_point(o3).with_type("fermion").with_outgoing()
)
ar = AllRender(fd)
ar.render()

pyx:

feynmp:

tikz:

dot:

feynman:

mpl:

ascii:






      _b                  _c


*->---->---->---->-*->---->---->---->--*
                    ~~~
                       ~        c
                      + ~~~
                       W   ~
                            ~*->---->--*
                               >
                                ---_s
                                   -
                                    >--
                                       *






             d


*->---->---->---->---->---->---->---->-*

unicode:






      b̅                  c̅


*→→→→→→→→→→→→→→→→→→*→→→→→→→→→→→→→→→→→→→*
                    ~~~
                       ~        c
                     +^ ~~~
                       W   ~
                            ~*↘→→→→→→→→*
                               ↘
                                ↘↘↘s̅
                                   ↘
                                    ↘↘↘
                                       *






             d


*→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→*