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Hi all, the D systematics study has reach a crucial point. You can see in the updated web page (http://www.slac.stanford.edu/~asarti/recoil/sys ) that the various D BR are extracted and the systematic is computed in a 'new' way: the BR are fixed to random values extracted accocrdingly to a gaussian distribution centered at PDG with PDG values for the sigma. The systematic effect is REALLY large. This is a very conservative way to extract the systematics. Sometimes we rely on the DECAY.DEC effect: the generated BR is far from the PDG one. Some other times is the PDG that has very large errors (this affect the systematics only in a 'statistical' way..) The other problems are coming of course from a BAD event reconstruction and those are the most dangerous from our point of view. the web page describes a little some of the main effects and contributions, but the work to understand such large syst. is ongoing... Any comment and help is really appreciated. Alessio ______________________________________________________ Alessio Sarti Universita' & I.N.F.N. Ferrara tel +39-0532-781928 Ferrara roma +39-06-49914338 SLAC +001-650-926-2972 "Vorrei tanto sapere chi e' che va in giro a costruire quadrati sull'ipotenusa"