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Observation of Y(3940)→J/ψω in B→J/ψωK at BABAR

Aubert, B. et al. (2008) Observation of Y(3940)→J/ψω in B→J/ψωK at BABAR. Physical Review Letters, 101 (8). 082001. ISSN 0031-9007

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We present a study of the decays B0,+→J/ψωK0,+ using 383×106 BB̅ events obtained with the BABAR detector at PEP-II. We observe Y(3940)→J/ψω, with mass 3914.6-3.4+3.8(stat)±2.0(syst)  MeV/c2, and width 34-8+12(stat)±5(syst)  MeV. The ratio of B0 and B+ decay to YK is 0.27-0.23+0.28(stat)-0.01+0.04(syst), and the relevant B0 and B+ branching fractions are reported.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 04 Jan 2012 08:46
Last Modified: 04 Jan 2012 08:46


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