Hi Kerstin,
Kerstin Tackmann wrote:
> Hi all,
>
[snip]
> after the mES fit... compare the number of data events (quite similar)
> and the number of Vcb events (quite different). As far as I know there is
> no SP5/SP6 weight on the generic MC.
Shouldn't be.
> In the case that we think
> efficiencies might be sensitive to the run period, this looks like a
> potential problem, doesn't it?
The Breco efficiency depends on the run period, I think. At least it
will be different between Run1/2 and Run4.
> And taking Run 3 into account, this looks
> even worse.
What do you mean by worse? How do you do this? In general there is one
problem with the signal MC splitted up into SP5/SP6. SP5 is always
Run1/2/3. Only the generic comes by each Runperiod seperately.
I can split up the signal MC also, if this is needed for better
comparisions.
> I am confused - I thought we were supposed to have SP5 and SP6
> roughly in the ratio of Run1-3 to Run4. And if this is true before any
> cuts and bkgd subtraction, it probably should not be vastly different
> afterwards.
Yes, this should be correct. The ratio and the statement about the cuts
(convoluted by the Breco efficiency).
Cheers,
Wolfgang
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Wolfgang Menges
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