Sherpa Release 1.0.9

Sherpa 1.0.9

A number of things are not working. Do not even try:

  • Parton shower in DIS--like situations, i.e. with only one incoming leg that showers.
  • Substructure of photons.
  • Laser backscattering beyond the region where CompAZ is valid (up to 500 GeV).

For process declarations a specific ordering is needed:

  • For electron-photon collisions make sure the photon is on the first beam, bunch and parton!
  • For electron-proton collisions make sure the electron is on the first beam, bunch and parton!

Download of alpha version Sherpa-1.0.9

The Sherpa package and a short primer on how to get started, can be downloaded here:

To run Sherpa with LHAPDF Version 3 you need to extract the LHAPDF grid archive into the SHERPA-1.0.9/Run directory. (The file size is 40 MB!)

Known problems/known bugs/FAQs

  • Problem: Installation into a specified prefix apart from the default didn't fully succeed.
    Fix: Apply patch file via patch -p0 < correct-exec_prefix.patch in the top level directory of your Sherpa installation.
  • Problem: Crash during event generation in some vector boson fusion setups.
    Fix: Apply patch file via patch -p0 < vbf-merging.patch in the top level directory of your Sherpa installation.
  • Problem: Compiling with newer gcc versions fails with Cluster_Partons_Base.H:74: error: invalid pure specifier (only = 0' is allowed) before ';' token.
    Fix: Apply patch file via `patch -p0 < invalid-pure-specifier-1.0.9.patch
    in the top level directory of your Sherpa installation.

If you have questions regarding the installation or the usage of Sherpa, which are not answered by our Howto, please look around in this Wiki as well and post them in the [user:index user section], if they could be of general interest. Bug reports should go directly to the [team:].