There have been a few small changes to the analysis since the
preblessing:
- The Z(mu,mu)+2p Monte Carlo became available and was added
to the electroweak background template
- A rounding error in the electroweak template normalization
was found and fixed.
- The ttbar generator shape systematic was quoted as the full
shift value, rather than 1/2 the shift value, as was done in Gen4.
The net result of the changes are listed below:
- >= 3 Jet cross section value changed from 6.1 pb to 6.0
pb but was unchanged for >= 4 jets.
- The "Other EWK" systematic went from 0.3% to 1.0% for >=
3 jets and from 1.3% to 1.1% for >= 4 jets.
- The shape component of the ttbar generator systematic went
from 1.8% to 0.9% for >= 3 jets and from 0.3% to 0.2% for >= 4
jets.
- The total systematic error went from 16.5% to 16.4% for
>= 3 jets but was unchanged for >= 4 jets.