Muon & photon SF interaction with cuts on CorrPt
Muon and photon SFs are measured as a function of the uncorrected pT. Objects whose uncorrected pT is below the lower boundary of the SF but with a CorrPt above will get a weight of 0 because they fall outside of the histogram.
I think we should extrapolate the SF from the lowest bin in the same way as we do for the highest bin (provided #95 (closed) if fixed). It should be the analyzer's job to implement sensible cuts on top of this.