Hi all,
Concezio Bozzi wrote:
> The files macro_to_SP_intpurXXX.log contain the yields to be used to
> compute S/P from the spreasheet. Incidentally, it seems that the study
> with purity cuts at 0.00 and 0.20 give exactly the same results, so
> there must have been a purity cut somewhere when producing the ntuple or
> the reduced ntuples.
The lower purity cut should be between 8 to 10% (single purity)
depending on the mode. See
http://www.slac.stanford.edu/BFROOT/www/Physics/Analysis/AWG/EHBDOC/skims/SemiExclskimdefinition.html
For the good modes the integrated purity is given, for the dirty mode
only single mode purities. Maybe this is the difference.
Cheers,
Wolfgang
> The new tag of BAD1383 includes the systematic uncertainties from the
> S/P ratios obtained by running 100 fits with properly randomized S/P, as
> well as the VVF fit chisquares. The S/P systematics tend to be high...
>
> Have fun, ciao, Concezio.
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Wolfgang Menges
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