We study charmless hadronic decays of charged B mesons to the final states K0 SK0 SK and K0 SK0 Sπ using a 711 fb−1 data sample that contains 772 × 106 BB¯ pairs and was collected at the ϒð4SÞ resonance with the Belle detector at the KEKB asymmetric-energy eþe− collider. For B → K0 SK0 SK, the measured branching fraction and direct CP asymmetry are ½10.42 0.43ðstatÞ 0.22ðsystÞ × 10−6 and ½þ1.6 3.9ðstatÞ 0.9ðsystÞ%, respectively. In the absence of a statistically significant signal for B → K0 SK0 Sπ, we obtain a 90% confidence-level upper limit on its branching fraction as 8.7 × 10−7.

Measurements of branching fraction and direct CP asymmetry in B±→KS0KS0K± and a search for B±→KS0KS0π±

Merola, M.;Russo, G.
Membro del Collaboration Group
;
2019

Abstract

We study charmless hadronic decays of charged B mesons to the final states K0 SK0 SK and K0 SK0 Sπ using a 711 fb−1 data sample that contains 772 × 106 BB¯ pairs and was collected at the ϒð4SÞ resonance with the Belle detector at the KEKB asymmetric-energy eþe− collider. For B → K0 SK0 SK, the measured branching fraction and direct CP asymmetry are ½10.42 0.43ðstatÞ 0.22ðsystÞ × 10−6 and ½þ1.6 3.9ðstatÞ 0.9ðsystÞ%, respectively. In the absence of a statistically significant signal for B → K0 SK0 Sπ, we obtain a 90% confidence-level upper limit on its branching fraction as 8.7 × 10−7.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/743497
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