[Rivet] JADE/OPAL jet rate measurements

[Hendrik Hoeth]

Hi Frank,

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

> In Sherpa we have been using a very nice experimental analysis
> published jointly by JADE and OPAL for jet rates in e+e-:
> [...]
> 
> Has anybody considered this analysis for Rivet yet?

No, not yet.

> Wouldn't it also be useful for fragmentation/shower tuning, since it
> covers an energy range of 35 to 189 GeV?

Yes, I think we should definitely include it.

> If nobody else is working on this or has any strong preference on how
> to implement it, I would look into it.
> Do you agree it's a good idea to split it into 8 separate analysis 
> identifiers, one for each CMS energy (and experiment)?

I would call it OPAL_JADE_2000_S4300807 and put all eight CMS energies
in the same analysis, as you'll have the same cuts, histograms etc. for
all the energies. That's the way we've handled such analyses before,
e.g. CDF_2002_S4796047 or the PDG_HADRON_MULTIPLICITIES. To fill all
histograms you then need to run the same analysis with different
generator settings.

Cheers,

     Hendrik

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