(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. doi:10.1103/PhysRevLett.102.132001 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, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Official Date:	3 April 2009
Dates:	Date Event 3 April 2009 Published
Volume:	Vol.102
Number:	No.13
Number of Pages:	7
Page Range:	article no. 132001
DOI:	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

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