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Evidence for B[superscript +]-->K[over-bar][superscript *0]K[superscript *+]

Author(s)
Dujmic, Denis; Henderson, Shawn Wesley; Sciolla, Gabriella; Yamamoto, R. K.; Zhao, M.; Fisher, Peter H; Cowan, Ray F; Spitznagel, Michael A; Taylor, Frank E; ... Show more Show less
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Alternative title
Evidence for B+→K̅ *0K*+
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B[superscript +]-->K[over-bar][superscript *0]K[superscript *+] with a sample of (467±5)×10[superscript 6] BB[over-bar] 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 Beta(B[superscript +]-->K[over-bar][superscript *0]K[superscript *+])=(1.2±0.5±0.1)×10[superscript -6] with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization fL=0.75[subscript -0.26][superscript +0.16]±0.03. The first error quoted is statistical and the second is systematic.
Date issued
2009-03
URI
http://hdl.handle.net/1721.1/55997
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Evidence for B+-->K-bar*K*+.” Physical Review D 79.5 (2009): 051102. © 2009 The American Physical Society.
Version: Final published version
ISSN
1089-4918

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