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Sherpa 2.2.1 (Cho Oyu)

Version 2.2.1 is a feature-release based on the second NLO version of Sherpa. The program now allows to compute scale uncertainties for one and the same event sample on-the-fly in all types of simulation setups. There are no physics changes in this release, so events generated with the same run card should be identical to the ones in 2.2.0. A more detailed changelog can be found below.

If you spot any problem, please send us an email. This will allow us to reach a mature version of the generator, suitable for all physics analyses. If you would like to be informed about patches and newer releases, please subscribe to our announcement mailing list.


The Sherpa package can be downloaded here:

In can also be accessed via svn through

A Manual is included in the Manual/ directory of the tarball. It is available in the HTML and INFO format and provides extensive documentation of all parameters. It can also be found online.


The main reference describing the physics of Sherpa is JHEP02 (2009) 007. Please cite this publication if you have used Sherpa for your studies. Additionally, each run will produce a file called Sherpa_References.tex which contains information about the modules used in this run and the corresponding publications which should be referred. If in doubt, please seek the advice of the Sherpa authors.


You can find a large collection of example setups for using SHERPA in various different colliders/processes in the Examples/ directory of the tarball. They are also described in the manual.


includes all bugfixes to Sherpa-2.2.0

Interface changes

  • TODO

New features

  • incoporation of approximate NLO EW corrections in MEPS@NLO simulation as described in arXiv:1511.08692
  • on-the-fly renormalisation and factorisation scale, PDF and alpha_s variations in the matrix elements for LO, LOPS, NLOPS, MEPS, MENLOPS and MEPS@NLO simulations as described in arXiv:1606.08753
Last modified 3 years ago Last modified on Jul 7, 2016, 2:50:23 PM