2019-07-03 Gauss v49r14

This version uses LHCb v39r1p4, Geant4 v96r4p3, Gaudi v26r4 and LCGCMT_79 with HepMC 2.06.09 and Root 6.04.02

The generators used (via LCG_79/MCGenerators) are pythia8 186 (with LHCb Tune1), lhapdf 6.1.4, photos++ 3.56, tauola++ 1.1.6b.lhcb, pythia 6.427.2, hijing 1.383bs.2, crmc 1.5.6 (epos), alpgen 2.1.4, powhegbox r2092, herwig++ 2.7.1, thepeg 1.9.2p1, rivet 2.4.2, yoda 1.5.9. startlight r300 and the internal implementation of: EvtGen with EvtGenExtras, AmpGen, Mint, BcVegPy and GenXicc, SuperChic, LPair, MIB

The data packages specific for the simulation are Geant4Files v96r* , GDMLData v1r* , XmlVis v2r* , DecFiles v30r* , LHAPDFSets v2r* , BcVegPyData v2r* , GenXiccData v3r* , PGunsData v1r* , MIBData v3r*

This version is released on Sim09 branch.

It is to be used for productions referred to as Sim09h

New features

Generators

• New EvtGen model for Lc2pKpi discussed in Jira task LHCBGAUSS-1577, !407 (@elniel) [LHCBGAUSS-1577] EvtGen Model for Lc2pKpi, Jira task LHCBGAUSS-1577 .

Enhancements

Generators

• AmpGen.sim09, !438 (@tevans)
  • Contains an updated version of AmpGen code generator including many new features.
  • Updated Gen/LbAmpGen with published models of D->4h and preliminary models of Lc-> phh
  • And an updated version of the interface to EvtGenExtras to include potential production polarisations.

Bug fixes

Generators

• Make sure minimum mass for resonances with non-zero width is larger than 10-4..., !460 (@kreps) [LHCBGAUSS-1716] Make sure minimum mass for resonances with non-zero width is larger than 10-4 in order to make sure that when we decide to which channel to decay we use minimum rather than mean mass. Fixes LHCBGAUSS-1716.

  This will have some effect on some decays and thus we should have change letter of Sim09.

Code modernisations and cleanups

• Remove check on host vs. target architecture, !468 (@clemenci) the check does not work for the new architecture description
  (gaudi/Gaudi!853), and was only needed to ensure we didn't try to build
  for x86_64 on i686 (we do not have 32 bits machines anymore), but it
  was only applied for gcc < 5.

Generators

• Fix ASCII HepMC reader/writer to scale units correctly, !456 (@dmuller) Removes GeneratorUtils::scale and uses the native HepMC unit conversion mechanisms. This now also converts the generated_mass() of the HepMC particles.

Monitoring changes and Chnages to tests

Other