imordial
<i>kT</i> to the subsystem initiator partons does not automatically
guarantee overall <i>pT</i> conservation. Various tricks are used to
minimize the mismatch, with a brute force shift of all parton 
<i>pT</i>'s as a final step. 

<p/>
Much of the above information is stored in a vector of 
<code>ResolvedParton</code> objects, which each contains flavour and 
momentum information, as well as valence/companion information and more. 
The <code>BeamParticle</code> method <code>list()</code> shows the 