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Hi, I am currently looking at mES fits using Argus + Crystal Ball parametrizations again. They actually do not look all that horrible for the separate bins, but they do for high stat fits. Doing this, a couple of questions have come up, some technical, some historical. I'd be very thankful if someone (Concezio, Roberto, Antonio, ...) could have a look and answer - I'll try to be short. The parameters fixed in these fits come from mesparsetting.dat. Where do these numbers in mesparsetting.dat actually come from? I assume they come from some high statistics fits - could you give some details about these (what kind of data/MC, cuts applied, all params floated?,...)? In the CM2 version of this file I see many comments of the sort "# not updated to CM2" - why is this? Did we actually have a look and see that the changes were negligible or has this simply not been looked at? I see that we are fixing the width of the Crystal Ball function. Why is this fixed also in those fits which do have a quite large signal fraction? Has anyone ever tried to float this in say the high stat fits (like for the correctionratios) and/or the mES fits for the low mX bins? If not, why not? Thanks so much, Kerstin