Journal
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
Volume 170, Issue -, Pages 39-45Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysbps.2007.05.003
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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(-).
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