[Rivet] mcplots - Problem with the OPAL 2004 Rivet analysis ?

[Andy Buckley]

On 23/05/11 19:05, Hendrik Hoeth wrote:
> Hi guys,
>
> I'm looking at Peter's LEP bug report. After having a very brief look at
> the publications I think he has a point:
>
> - ALEPH_2004_S5765862 seems to be using charged+neutral but without
>    neutrals below approx. 1-2 GeV (see section 2.3). We are using all
>    charged+neutral. Are they correcting later for the soft neutrals
>    or do we need to exclude them, too?
>
> - OPAL_2004_S6132243 also seems to use charged+neutral (and "neutral
>    leptons" -- see section 4.2) as described in 5.2. We are only using
>    charged particles. That's definitely a bug.
>
> Andy, Siggi, those are your analyses and you know the papers much
> better. Can you please have a look at this, so that it can go into
> 1.5.1?

Hi,

Yes, I'll have a look. I've got *very* little time until Thursday 
evening, though, unless volcanic ash stops me getting back to the UK!

I don't know if you noticed my commit message about the 
UnstableFinalState not finding all the unstable hadrons in the HERWIG 
event record... I've attached a couple of plots which show this... there 
are lots of unstable hadrons in PYTHIA which aren't found for HERWIG, 
but the two match when you look at the PIDs of *all* the particles in 
the GenEvent. Since that's your projection, Hendrik, can you take a look 
at that? :P

Andy

-- 
Dr Andy Buckley
SUPA Advanced Research Fellow
Particle Physics Experiment Group, University of Edinburgh

The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

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