Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.132001
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Funding
- DOE
- NSF (USA)
- NSERC (Canada)
- CEA and CNRS-IN2P3 (France)
- BMBF and DFG (Germany)
- INFN (Italy)
- FOM (The Netherlands)
- NFR (Norway)
- MES (Russia)
- MEC (Spain)
- STFC (United Kingdom)
- Marie Curie EIF (European Union)
- A. P. Sloan Foundation
- STFC [ST/H001166/1, ST/H000887/1, ST/H000992/1, ST/F008015/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F008015/1, ST/H001166/1, ST/H000992/1, ST/H000887/1, PP/E000444/1] Funding Source: researchfish
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In a search for B -> cc gamma K decays with the BABAR detector, where cc> includes J/psi and psi(2S), and K includes K-+/-, K-S(0), and K-*(892), we find evidence for X(3872)-> J/psi gamma and X(3872)->psi(2S)gamma with 3.6 sigma and 3.5 sigma significance, respectively. We measure the product of branching fractions B(B-+/--> X(3872)K-+/-)xB(X(3872)-> J/psi gamma)=[2.8 +/- 0.8(stat)+/- 0.1(syst)]x10(-6) and B(B-+/--> X(3872)K-+/-)xB(X(3872)->psi(2S)gamma)=[9.5 +/- 2.7(stat)+/- 0.6(syst)]x10(-6).
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