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Measurements of branching fraction and direct $$CP$$ asymmetry in $$B^{pm}to K^{0}_{S}K^{0}_{S}K^{pm}$$ and a search for $$B^{pm}to K^{0}_{S}K^{0}_{S}pi^{pm}$$

$$B^{pm}to K^{0}_{S}K^{0}_{S}K^{pm}$$の分岐比および直接$$CP$$非対称性の測定と$$B^{pm}to K^{0}_{S}K^{0}_{S}pi^{pm}$$の探索

Kaliyar, A. B.*; 谷田 聖   ; Belle Collaboration*; 他197名*

Kaliyar, A. B.*; Tanida, Kiyoshi; Belle Collaboration*; 197 of others*

We study charmless hadronic decays of charged $$B$$ mesons to the final states $$K^{0}_{S}K^{0}_{S}K^{pm}$$ and $$K^{0}_{S}K^{0}_{S}pi^{pm}$$ using a $$711 fb^{-1}$$ data sample that contains $$772times 10^6$$ $$Bbar{B}$$ pairs, and was collected at the $$Upsilon(4S)$$ resonance with the Belle detector at the KEKB asymmetric-energy $$e^{+}e^{-}$$ collider. For $$B^{pm}to K^{0}_{S}K^{0}_{S}K^{pm}$$, the measured branching fraction and direct $$CP$$ asymmetry are $$[10.42pm0.43(stat)pm 0.22(syst)]times10^{-6}$$ and [$$+1.6pm3.9(stat)pm 0.9(syst)$$]%, respectively. In the absence of a statistically significant signal for $$B^{pm}to K^{0}_{S}K^{0}_{S}pi^{pm}$$, we obtain a 90% confidence-level upper limit on its branching fraction as $$8.7 times10^{-7}$$.

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パーセンタイル:14.11

分野:Astronomy & Astrophysics

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