Hello vub-recoilers,
I computed weights for the different Runs in MC, so that the relative
numbers of events match the numbers of BBbar events in data for a given
Run (I use BbkLumi to get the number of BBbar pairs in data).
Since we are doing this Run-by-Run anyway, I also scale the numbers of
B+B- and B0B0bar to be consistent between different Runs. For this I use
the PDG 2006 number: Gamma(Ups(4S)->B+B-)/Gamma(Ups(4S)->B0B0bar)=1.026.
Here are the weights I find:
Generic MC:
B0B0bar B+B-
Run 1 0.8709 0.9031
Run 2 0.9272 0.9522
Run 3 0.9994 1.1003
Run 4 0.9346 0.9543
Run 5 1.0000 0.9750
Signal MC:
B0B0bar B+B-
Run 1 0.9616 0.9866
Run 2 0.9711 0.9964
Run 3 0.9746 0.9999
Run 4 0.9878 1.0135
Run 5 1.0000 1.0260
More numbers and details can be found here:
http://costard.lbl.gov/~kerstin/vubunf/ana32/mayprod.txt
We can expand Wolfgang's
double VirClass::getGenericSPWeight() and
double VirClass::getSignalSPWeight() to apply these weightings in VVF.
This does not change the magic k number for the signal MC, since the
weights for 2575 and 6333 are the same.
Happy reweighting,
Kerstin
Thanks, Roberto, for producing the files to let us count the
generated signal MC events!
