[Rivet] Rivet 2.1.1 & YODA 1.0.6 soon?

[Andy Buckley]

Hi all,

I have just tidied and merged the three outstanding ATLAS and CMS
analyses into the release-2-0 Rivet branch:

* ATLAS_2012_I1199269: isolated diphoton (uses jet areas in isolation)
* CMS_2013_I1272853: W + 2 jet double parton scattering
* CMS_2013_I1273574: 4 jet production and correlations

The overall quality was pretty good this time and there were no awkward
issues... although I did manage to reduce the number of characters in
one CMS analysis by a factor of 2, despite adding comments! (They
apparently hadn't worked out that you could add or multiply FourMomentum
objects and were doing it all by hand, plus some other common ways to
write the same code eight times.)

I don't have a convenient way to test these, although it was already
done by the expts... can anyone else help, or shall I ask the ATLAS &
CMS Rivet contacts to take a look at the tidied-up code?

Since I just noticed recently that we didn't provide a programmatic way
to access the post-finalize YODA histograms from AnalysisHandler, and we
need that for full ATLAS integration of Rivet2, I would like to add that
feature and release Rivet 2.1.1 as soon as possible with these analyses
included. Being more responsive with analysis update releases was anyway
something we wanted to do.

I've already done some header tidying, improvement of momentum
comparison/sorting machinery, and have added some first helper methods
to Particle for studying decay chains without having to drop into
HepMC-land, plus other small bugfixes (and I see Frank S made one as
well). YODA has also seen some significant improvements since the 1.0.5
release, and I'll add a few more minor things before this release.

So, does anyone else have any bugfixes to commit, or features that
you're desperate to get into this release? Or objections?

Cheers,
Andy

-- 
Dr Andy Buckley, Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow / PH Dept, CERN