How to reweight scale variation
Asked by
Yizhou Cai
Dear experts,
I am doing an analysis by Madgraph at LO. I already have some samples with systematics error like scale variations, and want to scan more parameter points by reweighting these samples. Is there any way to get scale variations for the new points after reweight?
In fact, I have tryed to simply compute the new weights by multiplying |ME_new|/|ME_old|, but it seems that modifying run_card.dat will not change the ME, and it must be troublesome because we have more than two hundred weights for systematics.
Regards,
Yizhou
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