CP violation and CKM measurements in Bottom and Charm decays at CDF

Abstract

We present preliminary measurements of branching ratios and CP asymmetries in 5 charmless decay modes of the B mesons and precise measurement of direct CP asymmetry in Cabibbo-suppressed charm decays. We used 180pb−1 of the hadronic-b data stream of CDF's Tevatron Run2. The decay mode B s → ϕ ϕ has been observed for the first time, with a branching fraction of ( 1.4 ± 0.6 ± 0.2 ± 0.5 ) × 10 −5 . We also present the first measurement of the branching fraction B ( B s → K + K − ) = ( 3.56 ± 0.57 ± 0.50 ± 0.43 ) × 10 −5 .