Evidence for Direct CP Violation in the Measurement of the Cabibbo-Kobayashi-Maskawa Angle γ with B#-+# to D(*) K(*)#-+# Decays

We report the measurement of the Cabibbo-Kobayashi-Maskawa CP-violating angle γ through a Dalitz plot analysis of neutral D meson decays to KS0π+π- and KS0 K+K- produced in the processes B#-+# → DK#-+#, B#-+# → D* K#-+# with D* → Dπ0, Dγ, and B#-+# → DK*#-+# with K*#-+# → KS0π#-+#, using 468 million B(bar B) pairs collected by the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC. We measure γ = (68 ± 14 ± 4 ± 3)o (modulo 180o), where the first error is statistical, the second is the experimental systematic uncertainty and the third reflects the uncertainty in the description of the neutral D decay amplitudes. This result is inconsistent with γ = 0 (no direct CP violation) with a significance of 3.5 standard deviations.