add flag for 1D/2D muon isolation SFs and setting the default to 1D
MCP isolation SFs uncertainties were found to be problematic. They are binned in 2D, in pt of the muon and DR(muon,closest jet). Due to stat fluctuations, in some bins the uncertainties have weird values. So we're now reverting to use 1D ones as default (binned vs muon pt).
With this MR we add the Use2DIsoCorrections flag to the MuonEfficiencyScaleFactors tool. Use2DIsoCorrections = false (default) -> the 1D binning vs pt will be used Use2DIsoCorrections = true -> the 2D binning vs pt and DR(muon,closest jet) will be used.
The default calibration area for the tool is also updated to the newest one, containing the 1D SFs with symmetrized uncertanties, which are more reliable: 210222_Precision_r21
Edited by Marco Vanadia