[Rivet] DressedLeptons in ZFinder

[Frank Siegert]

Hi Chris,

I think it should be possible to use
ZFinder::getProjection("DressedLeptons") to get the DressedLeptons
projection which is used by the ZFinder.

But this is more of a workaround, since you would be relying on
internal details of the ZFinder implementation, namely the name under
which the DressedLeptons projection is registered in the ZFinder. It
would be better to introduce a function in the ZFinder interface which
returns the dressed leptons directly. Do you want to send a patch
after you have tested that it's doing what you need?

Cheers,
Frank


On 18 August 2015 at 23:01, Christian Gütschow <chris.g at cern.ch> wrote:
> Hi all,
>
> just to double check I'm not missing anything here: It's currently not
> possible to access the list of DressedLeptons used by the ZFinder, right?
> What's the argument against providing this functionality?
>
> Suppose I have an event with three muons that pass a given dressed-level
> definition, but only two of them form a Z-boson candidate. If I was to
> require *exactly* two muons forming a Z candidate, then I wouldn't be able
> to do that using just the ZFinder.
>
> That is, the ZFinder, as far as I can tell, only returns the DressedLeptons
> associated with the dilepton candidates, but one couldn't tell whether or
> not there was some additional spurious lepton in the event that doesn't
> successfully pair up with the others. Unless, of course, the DressedLeptons
> projection was added as well, but then why use the ZFinder in this case at
> all?
>
> Cheers,
> Chris
>
>
> --
>
>  Dr. Christian Gütschow
>
>  TU Dresden
>  Institut für Kern- und Teilchenphysik
>  Zellescher Weg 19
>  01069 Dresden
>
>  > E17, Andreas-Schubert-Bau
>  > chris.g at cern.ch
>
>
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