UrQMD Simulation 
files used for analysis. urqmd, one lepton in an event.
Rich param. pictures 
no Rich-Mdc Correaltion cut applied. pictures are noise free - why?
 
-  rich pcitures, no mdc-rich correlation cut: 
   
Rich param. pictures after Rich-Mdc Correaltion cut for 2 momentum algorithms (kick=balck, runge=red).
Shape of the distributions is the same for both mom algorithms, counting rate different due to matching of inner and outer segements
for runge. 
-  rich pictures: rich -mdc corealtion cut, different momentum algorithms: 
   
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YvonnePachmayer - 17 Feb 2006