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Laboratoire de Physique des Particules, IN2P3/CNRS et Université de Savoie, F-74941 Annecy-Le-Vieux, France.
Phys Rev Lett. 2008 Aug 29;101(9):091801. doi: 10.1103/PhysRevLett.101.091801.
Using 383 x 10(6) BBover pairs from the BABAR data sample, we report results for branching fractions of six charged B-meson decay modes, where a charged kaon recoils against a charmless resonance decaying to KKover* or etapipi final states with mass in the range (1.2-1.8) GeV/c2. We observe a significant enhancement at the low KKover* invariant mass which is interpreted as B+-->eta(1475)K+, find evidence for the decay B+-->eta(1295)K+, and place upper limits on the decays B+-->eta(1405)K+, B+-->f1(1285)K+, B+-->f1(1420)K+, and B+-->phi(1680)K+.
利用来自BABAR数据样本的383×10⁶个B⁻B⁺对，我们报告了六种带电B介子衰变模式分支比的结果，其中一个带电K介子与一个衰变为KK⁻*或ηππ末态且质量在(1.2 - 1.8) GeV/c²范围内的无粲共振产生反冲。我们在低KK⁻*不变质量处观察到显著增强，将其解释为B⁺→η(1475)K⁺，找到B⁺→η(1295)K⁺衰变的证据，并对B⁺→η(1405)K⁺、B⁺→f₁(1285)K⁺、B⁺→f₁(1420)K⁺和B⁺→φ(1680)K⁺衰变设定上限。
