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Hi Sheila, > > Out of the 20k events, 11598 make it to the point that we even initialize > > a RecoilMCUtil for them. The 8402 others apparently have an empty Breco > > list (according to the eventCat histogram). Why does this actually happen? > > We are running over the SemiExclusive skim after all. Why does the skim > > write events with an empty Breco candidate list? > > I have observed the same thing when I run. I am just testing my code > so my sample is small, but when I run 30 events about 10 of them have > an empty Breco list. Steve said that he gets empty Breco lists in > some events, too. Yes, David (Lopes Pegna) observes the same thing. I guess I was just wondering if there is a reason why the skimming code does it this way. Kerstin