.. _sphx_glr_auto_examples_Particle_Physics_plot_ggFZZ_EFT.py:


ggFZZ EFT
=========

The gluon-gluon fusion.




.. image:: /auto_examples/Particle_Physics/images/sphx_glr_plot_ggFZZ_EFT_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,"Gluon-Gluon Fusion (ggF)",fontsize=40)
    in1 = diagram.vertex(xy=(.05,.7), marker='')
    in2= diagram.vertex(xy=(.05,.3), marker='')
    v1 = diagram.vertex(xy=(.25,.7))
    v2 = diagram.vertex(xy=(.25,.3))
    v3 = diagram.vertex(xy=(.45,.5))
    higgsout = diagram.vertex(xy=(.60,.5))
    zout1 = diagram.vertex(xy=(.85,.7), marker='')
    zout2 = diagram.vertex(xy=(.85,.3), marker='')

    gluon_style = dict(style='linear loopy', xamp=.025, yamp=.035, nloops=4)

    g1 = diagram.line(in1, v1, **gluon_style)
    g2 = diagram.line(in2, v2, **gluon_style)
    t1 = diagram.line(v1, v2)
    t2 = diagram.line(v2, v3)
    t3 = diagram.line(v3, v1)
    higgs = diagram.line(v3, higgsout, arrow=False, style='dashed')
    z1 = diagram.line(higgsout, zout1,arrow=False, style='wiggly')
    z2 = diagram.line(zout2, higgsout,arrow=False, style='wiggly')

    g1.text("$g$",fontsize=30)
    g2.text("$g$",fontsize=30)
    diagram.text(zout1.xy[0]+.025,zout1.xy[1],"$Z$",fontsize=30)
    diagram.text(zout2.xy[0]+.025,zout2.xy[1],"$Z$",fontsize=30)
    t1.text("$t$",fontsize=30)
    t2.text("$t$",fontsize=30)
    t3.text(r"$\bar{t}$",fontsize=30)
    higgs.text("H",fontsize=30)
    diagram.text(higgsout.xy[0]+0.24, higgsout.xy[1],
                 "$\kappa_\mathrm{SM}/\kappa_{AZZ}/\kappa_{HZZ}$",fontsize=30)

    diagram.plot()
    plt.show()

**Total running time of the script:** ( 0 minutes  0.091 seconds)



.. only :: html

 .. container:: sphx-glr-footer


  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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


.. only:: html

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

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