[Rivet] VetoedFinalStates on jets

[Frank Siegert]

Hi Kristin,

The WFinder projection has an argument 'trackPhotons' which configures
exactly the behaviour you are looking for. By default
trackPhotons=NOTRACK and as such the clustered photons will not be
included in the WFinder::FinalState particles, i.e. they would not be
vetoed in your code snippet. If you want to veto them, you would add
TRACK as last argument in your WFinder constructor.
Furthermore, in your code you have set dR=0 in the WFinder arguments,
so there will never be any clustered photons. Is that on purpose?

Note, that the exact form of the WFinder arguments has evolved with
Rivet versions, so my answer above applies to the most recent version
of the constructor, as documented here:
https://rivet.hepforge.org/code/dev/a00367.html#a80792f53b82536aca74bb8dd19908379

Cheers,
Frank


On 2 June 2014 16:46, kristin Lohwasser <kristin.lohwasser at cern.ch> wrote:
> Dear all,
>
> I would like to check something on the Jets coming with a Vetoed final state
> applied,
>
> essentially I require a WFinder and exclude its decay products from the
> jets.
> --> Question: Does this contain the bremsstrahlungs photons coming from the
> electrons?
> --> Is there any (elegant) way to exclude them as well?
>
> Code is below the signature.
>
> Thanks for any hints & Best
> Kristin
>
>       WFinder wfinder_born_el(fs, -2.5, 2.5, 20*GeV, PID::ELECTRON, 0*GeV,
> 8000*GeV, 15*GeV, 0., WFinder::CLUSTERNODECAY     );
>       addProjection(wfinder_born_el, "WFinder_born_el");
>
>       // Input for the jets: no neutrinos, no muons, and no electron which
> passed the electron cuts
>       VetoedFinalState veto;
>       veto.addVetoOnThisFinalState(wfinder_born_el);
>       veto.addVetoPairId(PID::MUON);
>       veto.addVetoPairId(PID::ANTIMUON);
>       veto.vetoNeutrinos();
>       FastJets jets(veto, FastJets::ANTIKT, 0.4);
>       addProjection(jets, "jets");
>
> --
> ****************************************************
> Dr. Kristin Lohwasser
>
> DESY
> Zeuthen
> Raum: 3L-022
> Telefon +49 33762 7-7647
> Platanenallee 6
> D-15738 Zeuthen
> Deutschland
>
> Kristin.Lohwasser at cern.ch
> ****************************************************
>
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