André Zambanini Messages: 17 Registered: February 2012 Location: FZ Jülich
occasional visitor
From: *ext.kfa-juelich.de
I actually have the same problem with a non-working vertex fitter combining a (anti-)lambda with some other particle. If I remember well, Dariusch saw the same.
Other than Jenny, I'm using the particle candidate after the vertex fitting as you just suggested. So my guess is that this is not the issue.