[Rivet] Problem with Rivet LEP Four Jet Analysis

[Hendrik Hoeth]

Thus spake Frank Siegert (frank.siegert at durham.ac.uk):

> In addition to what Hendrik pointed out: Do you happen to be using *all* 
> particles in your internal analysis, or only the charged particles?
> I also saw discrepancies between my own implementation of this analysis 
> and the Rivet one, and it turned out to be important to restrict your 
> analysis to charged particles only.

Well, no matter what, but looking at this Rivet plots it's clear that
they are wrong. I don't even need data points in the plot to see that.
In fact it's even worse now than it was when I declared the analyses as
"bad". This might be due to the Fastjet transistion, I don't know.

Simon, I still have one question. How do you normalize the histograms in
your internal Herwig analysis? Do you normalize the area to data, or is
this what comes out of your jet finder?

   Hendrik

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