[Rivet] Sherpa+Rivet: m_io->fill_next_event fails

[Frank Siegert]

Frank Siegert, Thursday 26 November 2009:
> Eike von Seggern, Thursday 26 November 2009:
> > I'm trying to run Sherpa with the BaBar setup and analyse the events
> > with Rivet. However, Rivet stops after processing a few events. I
> > tracked it down to that the m_io->fill_next_event call in
> > Run::processEvent fails. But no other error message is printed by
> >  HepMC. Sherpa and Rivet are both built against HepMC 2.05 .
> >
> > I attach the Sherpa run card. The Rivet command is:
> >
> > rivet -l Rivet=DEBUG -a PDG_HADRON_MULTIPLICITIES babar.hepmc2g
> >
> > Has anyone an idea what's going wrong.
> 
> I don't have a solution, but it might be interesting to know whether it
> works through Sherpa's internal Rivet interface (in 1.2.0). Our manual
> describes how you can use that... could you give that a try?

Actually, I've just tested it, and it doesn't stall, but the analysis 
isn't going to work for Babar events, since it looks at 2*"mean beam 
momentum" instead of sqrt(s). This isn't the same for asymmetric beams.

Frank