B2hh GFact Asymmetry Fitting page

The aims for the asymmetry fitter are the following

• Add Bs→KK pdf to fit package
• Think about adding the other background pdfs (3 body, Λ's)
• Alter the parameters that are being varied by the minimiser to d, θ and γ

2. B_s → K K

50 datasets were generated with 6099 events per data set using 0.68 bs2KK (sf3=1 and ssb = 0.68) and 0.32 combinatoric background ( mass distribution ). The asymmetry fitter was used to fit for Bs asymmetries only with sf3'=0.68 and obtained the following Adir for Bd and Amix for Bs which in numbers are:
Adir Bs - input was 0.1 and fitted was 0.0811 ± 0.0275
Amix Bs - input was 0.25 and fitted was 0.1799 ± 0.0346

3. B_d → π π and B_d → K π

50 data sets were generated with 6099 events per data set using 0.68 bd2pipi and bd2Kpi (sf1=sf2=0.5 and ssb = 0.68) and 0.32 combinatoric background ( mass distribution ).The asymmetry fitter was used to fit for Bd asymmetries only with sf1'=sf2'=0.34 and obtained the following Adir for Bd and Amix for Bd which in numbers are:
Adir Bd - input was 0.38 and fitted was 0.298 ± 0.206
Amix Bd - input was 0.61 and fitted was 0.660 ± 0.062

4. B_d → π π, B_d → K π and B_s → K K

50 datasets were generated with 6099 events per data set using all 3 channels with sf1=sf2=sf3=0.333 and ssb = 0.68) and 0.32 combinatoric background ( mass distribution ). The asymmetry fitter was used to fit for Bd asymmetries only with sf1'=sf2'=sf3'=0.226 and obtained the following Adir for Bd and Amix for Bd which in numbers are:
Adir Bd - input was 0.38 and fitted was 0.4917 ± 0.0638
Amix Bd - input was 0.61 and fitted was 0.6852 ± 0.0456
Then re-ran the asymmetry fitter for the B_s asymmetries and found;
Adir Bs - input was 0.1 and fitted was 0.0416 ± 0.0606 ( A^dir_Bs)
Amix Bs - input was 0.25 and fitted was 0.1505 ± 0.0598( A^mix_Bs)