Measurements of the absolute branching fractions of B±→ K±Xcc̄

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doi:10.1103/PhysRevLett.96.052002

We study the two-body decays of B± mesons to K± and a charmonium state Xcc̄ in a sample of 210.5fb-1 of data from the BABAR experiment. We perform measurements of absolute branching fractions B(B±→K±Xcc̄) using a missing mass technique, and report several new or improved results. In particular, the upper limit B(B±→K±X(3872))[removed]4.2% will help in understanding the nature of the recently discovered X(3872).

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2006). Measurements of the absolute branching fractions of B±→ K±Xcc̄. PHYSICAL REVIEW LETTERS, 96(5) [10.1103/PhysRevLett.96.052002].