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

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Aubert, B., Bona, M., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J. Garra, Grauges, E. et al.
. (2009) Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- decays and a study of B -> cc gamma K. Physical Review Letters, Vol.102 (No.13). article no. 132001. ISSN 0031-9007

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Abstract

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).

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 3 April 2009
Volume: Vol.102
Number: No.13
Number of Pages: 7
Page Range: article no. 132001
Identification Number: 10.1103/PhysRevLett.102.132001
Status: Peer Reviewed
Publication Status: Published
Funder: 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
URI: http://wrap.warwick.ac.uk/id/eprint/28118

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