[Rivet] Problem with Rivet LEP Four Jet Analysis

[Simon Plaetzer]

Hi Hendrik, Frank,

in the Herwig++ analysis, jets are clustered from all particles, 
normalization is performed to data (forgot to say that we're only looking 
at the Durham versions of the angles).

Best
Simon

On Wed, 23 Sep 2009, Hendrik Hoeth wrote:

> 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
> 
> -- 
> "You have to take the most direct road to go instead of your
>  meeting, you have to, this one ended, leave at once the CERN
>  domain."         (imprint on the CERN visitor ID cards)
>