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<title>Beam Remnants</title>
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<h2>Beam Remnants</h2>

<h3>Introduction</h3>

The <code>BeamParticle</code> class contains information on all partons 
extracted from a beam (so far). As each consecutive multiparton interaction 
defines its respective incoming parton to the hard scattering a 
new slot is added to the list. This information is modified when 
the backwards evol