[Rivet-announce] New Rivet 2.2.1 and YODA 1.3.1 releases

[Andy Buckley]

Dear Rivet users,

We're very pleased to announce the release of Rivet 2.2.1 and an
accompanying release of version 1.3.1 of the YODA histogramming package.
They're available for download immediately from
http://rivet.hepforge.org/ and http://yoda.hepforge.org/ respectively.

This new release of Rivet is a minor version update containing several
important bug fixes and improvements: a bugfix in isCharmHadron(pid),
use of vector rather than scalar pT for the MET cut in WFinder, a fix to
the transverse mass setting (also) in WFinder, improvement of numerical
tolerance handling in the Vector3::angle() function, and adding a
missing projection comparison operator to the HeavyHadrons class.

In addition there are some feature improvements: the Cuts system has
been improved with new Cuts::abseta and Cuts::absrap selectors, and the
ability to logically combine them with standard &&, || etc. operators.
Many Projection interfaces have also been updated to use the new Cuts
functionality. We've also added a --cmd option to rivet-buildplugin to
help users of LCG Grid distributions, and the possibiity to pass PLOT
parameters via a pseudo-file argument to rivet-cmphistos and
rivet-mkhtml. Finally we have provided a FinalPartons projection to
help, for example, with the new QCDAware Fastjet plugin, a set of
particle charge/sign comparison functions, and 16 new analyses! Please
see the ChangeLog (https://rivet.hepforge.org/trac/browser/ChangeLog)
for the full list of substantial changes since release 2.2.0.

The new version of YODA is also a bugfix release, but we have added a
first versions of built-in Python modules and scripts for data object
plotting and rescaling. Enjoy :-)

As always, these new versions are recommended for immediate use. Please
keep sending us your feedback and analysis codes!

Best wishes,
The Rivet team

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