Search for Direct CP Violation in Quasi-Two-Body Charmless B Decays

Abstract

We have searched for direct CP violation in quasi-two-body charmless B decays observed in a sample of about 45 million B mesons collected with the BABAR detector at the PEP-II collider. We measure the following charge asymmetries in decay: ${\mathcal{A}}_{CP}(B^{\pm }\to {\eta }^{\prime }{K}^{\pm })=-0.11\pm 0.11\pm 0.02$, ${\mathcal{A}}_{CP}(B^{\pm }\to \omega {\pi }^{\pm })=-0.01_{-0.31}^{+0.29}\pm 0.03$, ${\mathcal{A}}_{CP}(B^{\pm }\to \varphi K^{\pm })=-0.05\pm 0.20\pm 0.03$, ${\mathcal{A}}_{CP}(B^{\pm }\to \varphi K^{\ast \pm })=-0.43_{-0.30}^{+0.36}\pm 0.06$, and ${\mathcal{A}}_{CP}(B^0/{\bar{B}}^0\to \varphi K^{\ast 0}/{\bar{K}}^{\ast 0})=0.00\pm 0.27\pm 0.03$.

16 pages, 2 figures (6 postscript files), contributed to the 9th Heavy Flavor Symposium