[Rivet] all events are vetoed in Drell Yan analysis

[Holger Schulz]

Hi,

I want to generate some data using the CDF_2008_NOTE_9351 analysis in Rivet
and I am having trouble doing so. All the histos have zero entries due 
to the fact
that all events are being vetoed during the execution of Rivet.analyze().

Provided that everything is ok with the implementation of the analysis 
and that
the rather strict cuts are unavoidable, is there a way to tell Rivet to 
tell the Generator
to "regenerate" an event?

Or do I have to set the number of events to generate higher? (My latest 
attempt
included 300 times 1 million events with Pythia6:418.)

Cheers,
Holger