<!-- Single channel configuration exampple. The top level configuration XML is example.xml NormalizedByTheory should be "True" (not "TRUE" or "true") for all non-data-driven backgrounds. If you comment or remove the <Data> tag then it will use the expected data. Histogram inputs should be in pb and in top-level xml the lumi should be in 1/pb (The important thing is that they match... fb and 1/fb is also ok) Note: Config.dtd needs to be accessible. It can be found in ROOT release area. The file system path is relative to location of this XML file, not the executable. --> <!DOCTYPE Channel SYSTEM 'HistFactorySchema.dtd'> <Channel Name="channel1" InputFile="./data/example.root" > <Data HistoName="data" HistoPath="" /> <!-- Set the StatError type to Poisson. Can also be Gaussian --> <StatErrorConfig RelErrorThreshold="0.05" ConstraintType="Poisson" /> <Sample Name="signal" HistoPath="" HistoName="signal"> <OverallSys Name="syst1" High="1.05" Low="0.95"/> <NormFactor Name="SigXsecOverSM" Val="1" Low="0." High="3." /> </Sample> <Sample Name="background1" HistoPath="" NormalizeByTheory="True" HistoName="background1"> <StatError Activate="True" HistoName="background1_statUncert" /> <OverallSys Name="syst2" Low="0.95" High="1.05"/> </Sample> <Sample Name="background2" HistoPath="" NormalizeByTheory="True" HistoName="background2"> <StatError Activate="True" /> <!-- Use Default Histogram Errors as input to StatError --> <OverallSys Name="syst3" Low="0.95" High="1.05"/> <!-- <HistoSys Name="syst4" HistoNameHigh="HighHistForSyst4" HistoNameLow="LowHistForSyst4"/>--> </Sample> </Channel>