Measurements of the Absolute Branching Fractions of B±K±Xcc¯

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. Lett. 96, 052002 – Published 8 February 2006

Abstract

We study the two-body decays of B± mesons to K± and a charmonium state Xcc¯ in a sample of 210.5fb1 of data from the BABAR experiment. We perform measurements of absolute branching fractions B(B±K±Xcc¯) using a missing mass technique, and report several new or improved results. In particular, the upper limit B(B±K±X(3872))<3.2×104 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).

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  • Received 27 October 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.052002

©2006 American Physical Society

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Vol. 96, Iss. 5 — 10 February 2006

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