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Hi all, I've spent all day looking for bugs in the code but I couldn't find anything wrong. That's the way I'm extracting BRs: BR = (NcatSL)/(Nb) a) I calculate the number of Bs as: entries in the rootfile (Nb) b) I calculate NcatSL as: given a category (cat) of decay (let's say B->Dlnu) I loop overall the entries and ask 1) a semileptonic decay of the B, 2) a true D 3) the number of daughters of the recoil B == 3. (this requirement change in the case of a radiation photon: for each true photon found I increase by 1 the number of daughters requested : 1 pho -> 4 daughters. I've checked in the generator block that the photon is associated to the B and not to the electron if the number of B daughters is grater than 3) In this way the number obtained for the BR is still strange: 2.43159 Dlnu 7.33482 D*lnu (discrepancies with yesterday are coming for the bug fix on counting radiative photons). Now the disagreement factor with the PDG is not 2, but 1.7 (Dlnu) and 1.3 (D*lnu). I'm going to put those number in the BAD: let me know if someone has a suggestion or a question or has looked into the code and has found something strange. Cheers, 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"