[Rivet] b-tagging in Rivet

[Andy Buckley]

Hi Spyros,

The idea is that in general tagging objects could come from anywhere.
But the projection model (setting everything up before the run and
letting the dependencies resolve automatically) makes that non-trivial
to implement, so for now it's done by ghost association only. I think
that is the best way, but parentage association or deltaR association
would be nice options. I'll take a look at the docs and see if I can add
something that won't go out of date :-)

Andy


On 10/12/14 12:22, Spyridon Argyropoulos wrote:
> Hi,
> 
> I was looking through the Rivet documentation but I can't really
> understand if the Jet::bTagged method
> is equivalent to what has come to be known as "ghost matching" (i.e.
> rescaling the B hadrons' 4-momenta
> by a very small number and including them in the jet clustering).
> 
> If it is, it might be useful to include it in the method description. 
> ("b particles which have been tag-matched to this jet by some external
> means" is not very clear).
> 
> Thanks and best regards,
> Spyros
> 
> 
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-- 
Dr Andy Buckley, Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow / PH Dept, CERN