A possible optimization is to detect whether subgrids are systematically (roughly) equal for two channels in order to compress the grid. This may happen if a Monte Carlo decides to have up-antiup and charm-anticharm in two different channels, although the matrix elements for them are exactly the same (due to a diagonal CKM matrix).
A possible optimization is to detect whether subgrids are systematically (roughly) equal for two channels in order to compress the grid. This may happen if a Monte Carlo decides to have up-antiup and charm-anticharm in two different channels, although the matrix elements for them are exactly the same (due to a diagonal CKM matrix).