Sherpa 1.0.4
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-1.0.4
All Sherpa downloads can be found on HepForge
In the download archive you can also download a short primer on how to get started and how to use Sherpa.
Major changes with respect to Sherpa-1.0.3
- All bug-fixes and patches for version 1.0.3 are included.
- The string handling has been changed leading to an incompatibility of the new Sherpa version with library files produced with older versions of the program. The outcome of these changes is a significant smaller memory consumption and an acceleration of the code.
- The merging of matrix elements and parton showers has been revised and thoroughly tested. A default setup for describing W-boson plus jet production at Tevatron is now part of the release version.
- We have extended the input and output handling of Sherpa events.
- With version 1.0.4 we now provide an easy to use package for analysing Sherpa runs.
Known problems/known bugs/FAQs
Some test run output
After installing Sherpa and compiling it via the ./TOOLS/makeinstall script you can check your Sherpa implementation against some test run output we provide for the two default setups.
Electron photon collision at linear collider:
To obtain this process you simply have to type ./Sherpa in the Run directory of the SHERPA-1.0.4. package.
- Initialization run: Sherpa_init_ep.log
After executing ./makelibs just call ./Sherpa again and you should obtain the following output:
- Production run: Sherpa_run_ep.log
W+jet production at Tevatron:
To obtain this process you have to type ./Sherpa PATH=Tevatron1800 in the Run directory of the SHERPA-1.0.4. package.
- Initialization run: Sherpa_init_Tev18.log
After executing ./makelibs in the Tevatron1800 directory, execute ./Sherpa PATH=Tevatron1800 again and you should obtain the following output:
- Production run: Sherpa_run_Tev18.log