[Rivet] question of using Rivet. final state radiation and different transverse momentum threshold in ZFinder

[Deepak Kar]

Hi Yu-hsiang,

Please see inline.


> (1) In my Rivet plugin, I use
>
>        const FinalState fs(-5.0, 5.0);
>
> to define a final state, whose rapidity is within -5.0 to 5.0.
> Has the fs undergone the final state radiation(FSR)?
>

Yes, they are final state stable particles after all radiation.

> (2) In my Rivet plugin, I use
>
>        const ZFinder zfm(fs, -2.4, 2.4, 9*GeV, PID::MUON, 15*GeV, 1500*GeV);
>
> to obtain the Z bosob or the virtual photon from 2 final states fs,
> whose particle ID are Muon,
> rapidities are in [-2.4,2.4],
> transverse momentum(pT) are larger than 9 GeV,
> invariant mass are in [15,1500] GeV.
>
> If I want to choose my Z boson from 2 muon,
> but this time the 2 muons are required to different pT thresholds,
> the first Muon is required to have pT> 14 GeV,
> and the second Muon is required to have pT> 9 GeV,
> then how can I achieve it?

>
> Or is there other way to do that instead of using ZFinder?


I can think of  a "dirty" way - select the Z with two muons having 9
GeV, then veto the event
if the leading muon do not have 14 GeV subsequently.

Best,
Deepak

>
> Thanks.
>
> Yu-hsiang
>
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-- 
Deepak Kar
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