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

$$bar{B}^{0}to K^{0}_{S}K^{mp}pi^{pm}$$崩壊の分岐比および終状態における非対称度の測定

Lai, Y.-T.*; 谷田 聖   ; Belle Collaboration*; 他186名*

Lai, Y.-T.*; Tanida, Kiyoshi; Belle Collaboration*; 186 of others*

We report a measurement of the branching fraction and final-state asymmetry for the $$bar{B}^{0}to K^{0}_{S}K^{mp}pi^{pm}$$ decays. The analysis is based on a data sample of 711 $$rm{fb}^{-1}$$ collected at the $$Upsilon(4S)$$ resonance with the Belle detector at the KEKB asymmetric-energy $$e^{+}e^{-}$$ collider. We obtain a branching fraction of $$(3.60pm0.33pm0.15)times10^{-6}$$ and a final-state asymmetry of $$(-8.5pm8.9pm0.2)%$$, 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.

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パーセンタイル:7.79

分野:Astronomy & Astrophysics

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