[Herwig-announce] Herwig++ 2.4.2 and ThePEG 1.6.1 have been released

[David Grellscheid]

Dear Herwig++ and ThePEG users,

we would like to announce the release of ThePEG 1.6.1 together with
Herwig++ 2.4.2.

This release addresses several bug reports and makes improvements to
numerical stability and running time.

The main improvements are:

* Fixes to the numerical stability of tau decays which should address
many of the momentum violation problems that have been reported.

* The longitudinal boost to the QED radiation in hadron collisions is
now included correctly.

* Several improvements to numerical stability of decayers and QED radiation.

* A speed increase of a few percent for typical runs, from improved
handling of decay chain boosts.

* A fix for the gluino -> gluon neutralino ME.

* A fix for the misplaced K0 -> K_L/K_S vertex.

* The example input files for Powheg processes now set the NLO alpha_S
correctly.

* Build fixes for OS X Snow Leopard.


Please read both the 'NEWS' files for the detailed list of changes.


You can find the downloads at
   http://projects.hepforge.org/herwig/versions


For any questions, please contact herwig at projects.hepforge.org

With best regards,

   The Herwig++ and ThePEG authors


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