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Hi all, here a a few clarifications on how the fit machinery has changed and on how to obtain the default results. 1) The fit flag that switch on and off the reweighting is: -Theosys If you add that flag to the command line when launching a fit the fit will apply the weights provided, otherwise (ie NO -Theosys flag) no matter what are the weights they're NOT going to be applied. Results will be the default one. I just remind you that the OLD Defalt result (B & D sys reweighting on, All B, 1.55 Mx cut) is: BRBR = 0.0188272 +- 0.00249001(stat) +- 0.00113996(MC stat) while the New default (B&D sys, All B, 1.55 Mx cut, -Theosys flag) is: BRBR = 0.0209265 +- 0.00275093(stat) +- 0.00122476(MC stat) 2) When you use the -Theosys flag you need to provide to the fit the weights that are going to be used. You can take the file mysettings.dat_data as the example on how to provide the weights to the fit. You need to add a theomxweight 1 (that turns on the reading of the various weights) command in the cut file followed by the weights for each bin for B0 and B+ separately in the same wey that is showed in mysettings.dat_data file: theomxweight 1 bin0 1 bin1 4.09971 bin2 1.30544 bin3 1.763 bin4 1.39208 bin5 1.70889 bin6 1.87091 bin7 2.18299 bin8 1.62982 bin9 1.42043 bin10 2.34514 bin11 2.41272 bin12 2.01187 bin13 1.90189 bin14 2.45736 bin15 1.64077 bin16 1 bin17 1 bin0 1 bin1 5.20933 bin2 2.30252 bin3 1.34659 bin4 1.45464 bin5 1.45958 bin6 1.64968 bin7 1.52691 bin8 1.99392 bin9 1.57907 bin10 1.70728 bin11 1.86048 bin12 1.77522 bin13 1.80239 bin14 1.49867 bin15 2.56872 bin16 1 bin17 1.38739 For any urgent question you can reach me at +393889425406 ... Hope that is clear enough... Cheers, Alessio ______________________________________________________ Alessio Sarti Universita' & I.N.F.N. Ferrara tel +39-0532-974328 Ferrara roma +39-06-49914338 SLAC +001-650-926-2972 "... e a un Dio 'fatti il culo' non credere mai..." (F. De Andre') "He was turning over in his mind an intresting new concept in Thau-dimensional physics which unified time, space, magnetism, gravity and, for some reason, broccoli". (T. Pratchett: "Pyramids")