Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K

B. Aubert, L.L. Zhang, D.S. Bailey, G. Raven, H. Snoek, W. Wang, H. Liu

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Abstract

In a search for B→c¯cγK decays with the BABAR detector, where c¯c includes J/ψ and ψ(2S), and K includes K±, K0S, and K∗(892), we find evidence for X(3872)→J/ψγ and X(3872)→ψ(2S)γ with 3.6σ and 3.5σ significance, respectively. We measure the product of branching fractions B(B±→X(3872)K±)×B(X(3872)→J/ψγ)=[2.8±0.8(stat)±0.1(syst)]×10−6 and B(B±→X(3872)K±)×B(X(3872)→ψ(2S)γ)=[9.5±2.7(stat)±0.6(syst)]×10−6.

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Original languageEnglish
Article number132001
Pages (from-to)1-7
Number of pages7
JournalPhysical Review Letters
Volume102
Issue number13
Early online date30 Mar 2009
DOIs
Publication statusPublished - 3 Apr 2009

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