Add in Systematic Weights Associated with the Kinematics of Hadron FSI #45
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This was referenced Oct 1, 2025
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Adds in uncertainties on p-n, p-p, and n-n angular cross sections, as implemented by a bootstrapped evaluation of the uncertainties in the offsets between the SAID model and its constituent datasets. These form an uncertainty on inelastic and charge-exchange interactions in hadron FSI.
Also adds in an uncertainty on the amount of bias (B) in hadron FSI production. The size of the uncertainty is the difference in the bias in GENIE FSI (B=0, uniform kinematics), and the INCL bias.
This PR combines and supersedes Reweight #37 and GENIE-MC/Generator#449 originally submitted by @gputnam.