.. _sphx_glr_auto_examples_Particle_Physics_plot_ttH.py:


ttH
===

The ttH diagram.




.. image:: /auto_examples/Particle_Physics/images/sphx_glr_plot_ttH_001.png
    :align: center





.. code-block:: python

    import matplotlib.pyplot as plt
    from feynman import Diagram

    fig = plt.figure(figsize=(10.,10.))
    ax = fig.add_axes([0,0,1,1], frameon=False)

    diagram = Diagram(ax)
    diagram.text(.5,0.9,"Associated Top Pair (ttH)", fontsize=40)
    in1 = diagram.vertex(xy=(.1,.8), marker='')
    in2= diagram.vertex(xy=(.1,.2), marker='')
    v1 = diagram.vertex(xy=(.4,.7))
    v2 = diagram.vertex(xy=(.4,.3))
    v3 = diagram.vertex(xy=(.6,.5))
    out1 = diagram.vertex(xy=(.9,.8), marker='')
    out2 = diagram.vertex(xy=(.9,.2), marker='')
    higgsout = diagram.vertex(xy=(.9,.5))

    g1 = diagram.line(in1, v1, style='loopy',nloops=7,yamp=0.04)
    g2 = diagram.line(in2, v2, style='loopy',nloops=7,yamp=0.04)
    t1 = diagram.line(v3, v1, arrow = True)
    t2 = diagram.line(v2, v3, arrow = True)
    higgs = diagram.line(v3, higgsout, arrow=False, style='dashed')
    t3 = diagram.line(v1, out1, arrow=True)
    t4 = diagram.line(out2, v2, arrow=True)

    g1.text("g",fontsize=30)
    g2.text("g",fontsize=30)
    diagram.text(v3.xy[0], v3.xy[1]+0.1, r"$\bar{\mathrm{t}}$",fontsize=35)
    t2.text("t",fontsize=30)
    t3.text("t",fontsize=30)
    t4.text(r"$\bar{\mathrm{t}}$",fontsize=30)
    higgs.text("H",fontsize=35)

    diagram.plot()
    plt.show()

**Total running time of the script:** ( 0 minutes  0.083 seconds)



.. only :: html

 .. container:: sphx-glr-footer


  .. container:: sphx-glr-download

     :download:`Download Python source code: plot_ttH.py <plot_ttH.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: plot_ttH.ipynb <plot_ttH.ipynb>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_