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Evidence for B^+ → [overline K]^(*0)K^(*+) (2009)

Abstract

We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B^+ K^(*0)K^(*+) with a sample of (467±5)×10^6 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^(*0)K^(*+))=(1.2±0.5±0.1)×10^(-6) with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f_L=0.75_(-0.26)^(+0.16)±0.03. The first error quoted is statistical and the second is systematic.

Publication details

Download	http://authors.library.caltech.edu/16486/1/Aubert2009p1642Phys_Rev_D.pdf http://resolver.caltech.edu/CaltechAUTHORS:20091027-085310490
Publisher	American Physical Society
Repository	Caltech Authors (United States)
Type	Article, PeerReviewed
Relation	http://resolver.caltech.edu/CaltechAUTHORS:20091027-085310490 http://authors.library.caltech.edu/16486/