[Rivet] [Fastjet] Problem with JADE plugin?

[Andy Buckley]

On 24/06/10 09:19, Gavin Salam wrote:
> Hi Andy,
> 
> This is puzzling. What you're doing looks right.
> 
> Do you still have your original Jade plugin to compare with? The best way 
> of carrying out diagnostics is event-by-event comparisons of the 
> jets/cluster-sequence.

Hendrik, I guess you still have a copy of that patch somewhere? I would
guess that it couldn't be directly patched to a current Fastjet version,
but maybe with a couple of name changes (and dmerge -> ymerge, if I
remember correctly) the two could be used side by side.

> There's also the question of recombination scheme (e.g. use of energies v. 
> 3-momenta), but I thought we'd implemented what was written in the Jade 
> paper.
> 
> You can also try exclusive_ymerge_max (but I don't think it'll make much 
> difference -- I'm not sure which corresponds to what Jade did).

I tried that -- at least for the 2->3 inclusive plot it made no
difference to use the _max version of exclusive_ymerge. For the other
transitions I got segfaults -- I guess that when using the ymerge_max(n)
I need to explicitly make sure that n jets can definitely be found in
the event?

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
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