Branching fractions and direct CP asymmetries of charmless decay modes at the Tevatron

Abstract

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 (pion or kaon). The data set for this update amounts to 1 fb${}^{-1}$ of $\bar{p}p$ collisions at $\sqrt{s}=1.96\mathrm{TeV}$. We report the first observation of the $B_s^0\to K^{-}{\pi }^{+}$ mode and a measurement of its branching fraction and direct CP asymmetry. We also observe for the first time two charmless decays of $b$-baryon: ${\Lambda }_b^0\to p{\pi }^{-}$ and ${\Lambda }_b^0\to p{K}^{-}$.

Proceedings for Beauty 2006, Sept. 25-29 at Oxford University, to be published in Nucl. Phys. (Proc. Suppl.). FERMILAB-CONF-06-471-E. Dec 2006. 6pp

References in corpus (3)

• Two body B decays with isosinglet final states in SCET
• Observation of Bs->K+K- and Measurements of Branching Fractions of Charmless Two-body Decays of B0 and Bs Mesons in p-pbar Collisions at sqrt(s)=1.96 TeV
• Exploring B_{d,s}-> KK decays through flavour symmetries and QCD-factorisation

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