Direct CP Violation Searches in Charmless Hadronic B Meson Decays

Abstract

We search for direct CP violation in charmless hadronic B decays observed in a sample of about 22.7 million $B\bar{B}$ pairs collected with the BABAR detector at the PEP-II asymmetric-energy $e^{+}{e}^{-}$ collider. We measure the following charge asymmetries: ${\mathcal{A}}_{CP}(B^{\pm }\to {\eta }^{\prime }{K}^{\pm })=-0.11\pm 0.11\pm 0.02$, ${\mathcal{A}}_{CP}(B^{\pm }\to \omega {\pi }^{\pm })=-0.01_{-0.31}^{+0.29}\pm 0.03$, ${\mathcal{A}}_{CP}(B^{\pm }\to \varphi K^{\pm })=-0.05\pm 0.20\pm 0.03$, ${\mathcal{A}}_{CP}(B^{\pm }\to \varphi K^{\ast \pm })=-0.43_{-0.30}^{+0.36}\pm 0.06$, and ${\mathcal{A}}_{CP}(B^0\to \varphi K^{\ast 0})=0.00\pm 0.27\pm 0.03$.

8 pages, 2 postscript figues, submitted to Phys. Rev. D (rapid communications)