.. _sphx_glr_api_gallery_particle_resonance_discovery:

Resonance discovery
----------------------

The invariant-mass "bump hunt" -- the generic technique behind the
discovery of the J/psi, the W/Z bosons, the top quark, and the Higgs
boson -- built on :func:`physicskit.particle.kinematics.invariant_mass`.


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  <div id='sg-tag-list' class='sphx-glr-tag-list'></div>


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    <div class="sphx-glr-thumbnails">

.. thumbnail-parent-div-open

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    <div class="sphx-glr-thumbcontainer" tooltip="Four of this chronology&#x27;s landmark discoveries -- the J/psi (1974), the W and Z bosons (1983), the top quark (1995), and the Higgs boson (2012) -- were all found the same way: reconstruct the invariant mass of a candidate particle&#x27;s decay products event by event, histogram it over many collisions, and look for a resonance peak standing above a smooth combinatorial background. This example builds exactly that &quot;bump hunt&quot; with invariant_mass: a population of true resonance decays (fixed parent mass, isotropic decay angles) is buried inside a much larger population of random, uncorrelated background pairs, and the resonance peak is recovered directly from the histogram alone -- the generic technique behind every one of these four discoveries, applied here to a single representative example resonance.">

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  .. image:: /api/gallery/particle/resonance_discovery/images/thumb/sphx_glr_plot_01_invariant_mass_bump_hunt_thumb.png
    :alt:

  :doc:`/api/gallery/particle/resonance_discovery/plot_01_invariant_mass_bump_hunt`

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      <div class="sphx-glr-thumbnail-title">The invariant-mass bump hunt: J/psi, the W/Z, the top quark, and Higgs</div>
    </div>


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    </div>


.. toctree::
   :hidden:

   /api/gallery/particle/resonance_discovery/plot_01_invariant_mass_bump_hunt