Measurement of branching fraction and final-state asymmetry for the ${\bar{B}}^0\to K_S^0{K}^{\mp }{\pi }^{\pm }$ decay

Abstract

We report a measurement of the branching fraction and final-state asymmetry for the ${\bar{B}}^0\to K_S^0{K}^{\mp }{\pi }^{\pm }$ decays. The analysis is based on a data sample of 711 ${\mathrm{fb}}^{-1}$ collected at the ${\rm Y}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. We obtain a branching fraction of $(3.60\pm 0.33\pm 0.15)\times 10^{-6}$ and a final-state asymmetry of $(-8.5\pm 8.9\pm 0.2)\%$, where the first uncertainties are statistical and the second are systematic. Hints of peaking structures are seen in the differential branching fractions measured as functions of Dalitz variables.

arXiv comment17 pages, 4 figures, to be submitted to PRD(RC)

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