Difference: MassFitting (8 vs. 9)

Revision 92010-09-23 - LarsEklund

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META TOPICPARENT name="WebHome"

G-Fact Mass Fitting

Validation of signal fraction fitter (Lars)

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  Directory: fullMFMixAug2010/ , 1000 data sets, 100k events each

True S.F. Initial value Mean [%]
 Sigma [%]
 Pull mean Pull sigma
Bd->π+π- 8.47
 10 8.45 0.13 -0.13+/-0.03 1.02+/-0.02
Bd->K+π- 17.82
 15 17.84 0.14 0.12+/-0.03 0.99+/-0.03
Bd->K-π+ 14.58 15 14.58 0.13 -0.02+/-0.03 1.01+/-0.03
Bs->K+K- 8.47
 10 8.47 0.10 0.01+/-0.03 1.02+/-0.03
Bs->K+π- 1.62 1 1.62 0.07 -0.03+/-0.04 0.96+/-0.03
Bs->K-π+ 0.72 1 0.71 0.05 -0.32+/-0.03 1.01+/-0.02
Bd->π+π-π0 15.0 10 14.98 0.16 -0.11+/-0.03 1.02+/-0.02
Combinatoric 33.32 38 35.02


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Sensitivity to number of events

A series of fits to the data set Mix_Bd2pipiKpiNBs2KK (above) was done with a decreasing number of events. The initial values and fit configuration was identical to the fit described above. The results are summarised in the following graphs.

The error from the fit as reported by MINUIT versus number of events is show in this graph.

 

Paul's study with the signal fraction fitting

Just start typing here paul....This is a link.

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META FILEATTACHMENT attachment="Mix4_Bs2KminusPiplus_pull.png" attr="" comment="" date="1285081659" name="Mix4_Bs2KminusPiplus_pull.png" path="Mix4_Bs2KminusPiplus_pull.png" size="23586" stream="Mix4_Bs2KminusPiplus_pull.png" tmpFilename="/usr/tmp/CGItemp29127" user="LarsEklund" version="1"
META FILEATTACHMENT attachment="Mix4_Bs2KplusPiminus_pull.png" attr="" comment="" date="1285081666" name="Mix4_Bs2KplusPiminus_pull.png" path="Mix4_Bs2KplusPiminus_pull.png" size="23580" stream="Mix4_Bs2KplusPiminus_pull.png" tmpFilename="/usr/tmp/CGItemp29140" user="LarsEklund" version="1"
META FILEATTACHMENT attachment="Mix4_Bs2KK_pull.png" attr="" comment="" date="1285081885" name="Mix4_Bs2KK_pull.png" path="Mix4_Bs2KK_pull.png" size="23849" stream="Mix4_Bs2KK_pull.png" tmpFilename="/usr/tmp/CGItemp29124" user="LarsEklund" version="1"
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META FILEATTACHMENT attachment="FitErrorVsNEvents.pdf" attr="" comment="" date="1285240808" name="FitErrorVsNEvents.pdf" path="FitErrorVsNEvents.pdf" size="9257" stream="FitErrorVsNEvents.pdf" tmpFilename="/usr/tmp/CGItemp27693" user="LarsEklund" version="1"
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