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Evidence for B+K¯*0K*+

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. D 79, 051102(R) – Published 19 March 2009

Abstract

We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B+K¯*0K*+ with a sample of (467±5)×106 BB¯ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction B(B+K¯*0K*+)=(1.2±0.5±0.1)×106 with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization fL=0.750.26+0.16±0.03. The first error quoted is statistical and the second is systematic.

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  • Received 12 January 2009

DOI:https://doi.org/10.1103/PhysRevD.79.051102

©2009 American Physical Society

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Vol. 79, Iss. 5 — 1 March 2009

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