Study of Charmless Decays^B±→KS0KS0^h± (h= K, π ) at Belle

We report a search for charmless hadronic decays of charged B mesons to the final states KS0KS0K± and KS0KS0π±. The results are based on a 711fb-1 data sample that contains 772 × 106 BB¯ pairs, and was collected at the Υ (4 S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. For B±→KS0KS0K± decays, the measured branching fraction and direct CP asymmetry are [ 10.42 ± 0.43 (stat ) ± 0.22 (syst ) ] × 10- 6 and [ + 1.6 ± 3.9 (stat ) ± 0.9 (syst ) ]%, respectively. In the absence of a statistically significant signal for B±→KS0KS0π±, we set the 90% confidence level upper limit on its branching fraction at 8.7 × 10- 7.