[Rivet] CMS rivet plugin for diffractive dijets (CMS_2012_I1184941)

[Hendrik Hoeth]

Hi,

Thus spake Sercan Sen (Sercan.Sen at cern.ch):

> jets should be reconstructed from all final state particles and later
> events with at least two jets with pt>20 and |eta|<4.4 should be
> selected.
> 
> [...]
> 
> const FastJets jets(FinalState(-4.4, 4.4, 0.0*GeV), FastJets::ANTIKT, 0.5);
> >>>>  FastJets jets(fs, FastJets::ANTIKT, 0.5);

Here I'd suggest to take particles within |eta|<4.9 or 5.0 or whatever
your acceptance is.

> and add eta cut in the event loop:
> if (fabs(jets[0].momentum().eta()) > 4.4 || fabs(jets[1].momentum().eta()) > 4.4) vetoEvent;

This will require the two hardest jets to be within 4.4. The paper and
also the description you give yourself just requires two jets of 20 GeV
within 4.4 and doesn't care if there is a harder jet at 4.5. Maybe
Alexander can confirm what he actually did?

Cheers,

   Hendrik

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