Hoi Alessio and Daniele, the weights changed quite a bit (apart from the binning) in the low mX region wrt to the initial version of Alessio. In particular, bin1 even changed the direction of the weight (>1 -> <1). Furthermore, is it still true that eq 14 is implemented in the \xi form (which is right) and not the middle form (which is wrong)? Cheers, --U. New Old ---------------------------------------------------- bin0 1 bin0 1 bin1 0.636768 bin1 4.09971 bin2 1.01957 bin2 1.30544 bin3 1.19293 bin3 1.763 bin4 1.49278 bin4 1.39208 bin5 1.66824 bin5 1.70889 bin6 1.85889 bin6 1.87091 bin7 1.84273 bin7 2.18299 bin8 1.89469 bin8 1.62982 bin9 1.94351 bin9 1.42043 bin10 1.99724 bin10 2.34514 bin11 1.93445 bin11 2.41272 bin12 2.05699 bin12 2.01187 bin13 2.05112 bin13 1.90189 bin14 2.04044 bin14 2.45736 bin15 2.00212 bin15 1.64077 bin16 1.92181 bin16 1 bin17 1.97053 bin17 1 bin18 1.94157 bin19 1 bin20 1.09792 bin0 1 bin0 1 bin1 0.690106 bin1 5.20933 bin2 1.39781 bin2 2.30252 bin3 0.987893 bin3 1.34659 bin4 1.34145 bin4 1.45464 bin5 1.17816 bin5 1.45958 bin6 1.75503 bin6 1.64968 bin7 1.89179 bin7 1.52691 bin8 1.95983 bin8 1.99392 bin9 2.01284 bin9 1.57907 bin10 2.03704 bin10 1.70728 bin11 1.97187 bin11 1.86048 bin12 2.05301 bin12 1.77522 bin13 1.99579 bin13 1.80239 bin14 2.02767 bin14 1.49867 bin15 2.06574 bin15 2.56872 bin16 1.94922 bin16 1 bin17 1.95801 bin17 1.38739 bin18 1.67451 bin19 2.13989 bin20 2.13989