Question on cut
Asked by
Li
Hi,
I am using MG5 to generate pp->ttj, if I use cut like "ptj" in run card. Is the cross section the true cross section?
That is to say, Is it the cross section ( use cut ) equal to cross section ( do not use the cut ) * the rate ( pt larger than ptj )?
Another question is that, is there any influence of Matching? Since if I apply a very large cut, the cut is far from the matching area so I can ignore the match?
Best,
Li
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