On Tue, 9 Jan 2001, Christian Holm Christensen wrote: > In that mail, I provide a strong argument why you _must_ consider your > centrality cut as dependent on the vertex location. This is not > something that can be ignored. If you do not include this dependency > in your analysis, your the errors results will be > undetermined. Therefore I strongly urge you to read that mail again. I did read your mail, Christian, and take this into account. I just forgot to mention it in my last mail - things are a bit hectic today. I have tried to impose a vertex cut of +-30 cm on the ZDC/Mult plots, and to my eye it makes no difference to the spectra in this case. Maybe the cut should be narrower - this is being tested now. The plot I gave you is the one without a cut, since it had better statistics - for one with cut have a look at www.fys.uio.no/~bjornhs/Run2235_25k_vtxcut.ps This one has 25k events. The other difference is that here the top left plot is trigger 4 mult and trigger 6 mult superimposed. As Claus pointed out to me, we seem to have events with a high mult but no trigger 6! Any ideas on this? Thanks for the nice schematic :-) ------------------------------------------------ Bjorn H. Samset Master-student in Heavy Ion physics Mob: +47 92 05 19 98 Office: +47 22 85 77 62 Adr: Kri 2A709 Sognsveien 218 0864 Oslo
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