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Evidence for B+ -> (K)over-bar*K-0*(+)

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Aubert, B., Bona, M., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J. Garra, Grauges, E. et al.
(2009) Evidence for B+ -> (K)over-bar*K-0*(+). Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.79 (No.5). article no. 051102. . doi:10.1103/PhysRevD.79.051102

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Abstract

We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B+ -> (K) over bar*K-0*(+) with a sample of (467 +/- 5) x 10(6) B (B) over bar B 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) over bar*K-0*(+)) = (1.2 +/- 0.5 +/- 0.1) x 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.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: March 2009
Dates:
DateEvent
March 2009Published
Volume: Vol.79
Number: No.5
Number of Pages: 9
Page Range: article no. 051102.
DOI: 10.1103/PhysRevD.79.051102
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: US Department of Energy and National Science Foundation, Commissariat a l'Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France), Bundesministerium fur Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), Istituto Nazionale di Fisica Nucleare (Italy), Foundation for Fundamental Research on Matter (The Netherlands), Research Council of Norway, Ministry of Education and Science of the Russian Federation, Ministerio de Educacion y Ciencia (Spain), Science and Technology Facilities Council (United Kingdom), Marie Curie IEF program (European Union), A. P. Sloan Foundation

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