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Observation of B-0 -> K-*0(K)over-bar(*0) and search for B-0 -> K-*0(K)over-bar(*0)

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Babar Collaboration (Including:

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J. P., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Tico, J. Garra et al.
). (2008) Observation of B-0 -> K-*0(K)over-bar(*0) and search for B-0 -> K-*0(K)over-bar(*0). Physical Review Letters, Vol.100 (No.8). pp. 6-13. ISSN 0031-9007

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Abstract

We report the observation of the b -> d penguin-dominated decay B-0 -> K-*0(K) over bar (*0) with a sample of 383.2 +/- 4.2 million B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at the Stanford Linear Accelerator Center. The measured branching fraction is B(B-0 -> K-*0(K) over bar (*0))=[1.28(-0.30)(+0.35)+/- 0.11]x10(-6) and the fraction of longitudinal polarization is f(L)(B-0 -> K-*0(K) over bar (*0))=0.80(-0.12)(+0.10)+/- 0.06. The first error quoted is statistical and the second systematic. We also obtain an upper limit at the 90% confidence level on the branching fraction for B(B-0 ->(KK*0)-K-*0)< 0.41x10(-6).

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Date: 29 February 2008
Volume: Vol.100
Number: No.8
Number of Pages: 7
Page Range: pp. 6-13
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
URI: http://wrap.warwick.ac.uk/id/eprint/30401

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