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Published February 10, 2006 | Published
Journal Article Open

Measurements of the Absolute Branching Fractions of B^±→K^±X_(cc)


We study the two-body decays of B^± mesons to K^± and a charmonium state X_cc in a sample of 210.5  fb^(-1) of data from the BABAR experiment. We perform measurements of absolute branching fractions B(B^±→K^±X_(cc)) using a missing mass technique, and report several new or improved results. In particular, the upper limit B(B^±→K^±X(3872))<3.2×10^(-4) at 90% C.L. and the inferred lower limit B(X(3872)→J/ψπ^+π-)>4.2% will help in understanding the nature of the recently discovered X(3872).

Additional Information

© 2006 The American Physical Society. Received 27 October 2005; published 8 February 2006. We are grateful for the excellent luminosity and machine conditions provided by our PEP II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), IHEP (China), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MIST (Russia), and PPARC (United Kingdom). Individuals have received support from CONACyT (Mexico), A. P. Sloan Foundation, Research Corporation, and Alexander von Humboldt Foundation.

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August 19, 2023
August 19, 2023