Branching fractions and direct CP Asymmetries of charmless B decay modes at the tevatron

We present new CDF results on the branching fractions and time-integrated direct CP asymmetries for B-0 and B-s(0) decay modes into pairs of charmless charged hadrons (pions or kaons). The data-set for this update amounts to 1 fb(-1) of (p) over barp collisions at a center of mass energy 1.96 TeV. We report the first observation of the B-s(0 ->) K-pi(+) mode and a measurement of its branching fraction and direct CP asymmetry. We also observe for the first time two charmless decays of the Lambda(b)-baryon: Lambda(0)(b) -> p pi(-) and Lambda(0)(b) -> pK(-).