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Hi all, I recalculated the ratio of efficiencies eps_t(u)/eps_t(sl) on the new MC (p00). This is what I get: B0 ratio(epstr) = 0.955657 +- 0.03395 Bch ratio(epstr) = 1.00028 +- 0.0432283 Tot ratio(epstr) = 0.970303 +- 0.0266568 In the BAD we can replace 0.98 +- 0.04 with 0.97 +- 0.03 New systematics will be 3% Daniele