> > this could be the reason why the efficiency seems to be too low (50% > due from this bug). I removed the Abs and commited. Take the HEAD. > > There is another suspect cut. The number of charged kaons in the recoil > is higher than the one in the old Cpf analysis (mean 0.4 -> 1.4). As a > consequence, this cut is very inefficient even in Vub events (30% of > efficiency instead of 90% of the old analysis). Since kaons are not > present in Vub events this sounds really bad. it sounds like you are using NotAPion (which is the bit right after VeryTight...). I could not find the code where the cut is applied, can you point it to me? ciao ric