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B meson decays to charmless meson pairs containing eta or eta' mesons

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BABAR Collaboration (Including:

Aubert, B., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J. Garra, Grauges, E., Martinelli, M. et al.
). (2009) B meson decays to charmless meson pairs containing eta or eta' mesons. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.80 (No.11). article no. 112002. ISSN 1550-7998

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Abstract

We present updated measurements of the branching fractions for B-0 meson decays to eta K-0, eta eta, eta phi, eta omega, eta K-'(0), eta(')eta('), eta(')phi, and eta(')omega, and branching fractions and CP-violating charge asymmetries for B+ decays to eta pi(+), eta K+, eta(')pi(+), and eta K-'(+). The data represent the full data set of 467x10(6) BB pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B-0 ->eta K-'(0), we find evidence for three B-0 decay modes at greater than 3.0 sigma significance. We find B(B-0 ->eta K-0)=(1.15(-0.38)(+0.43)+/- 0.09)x10(-6), B(B-0 ->eta omega)=(0.94(-0.30)(+0.35)+/- 0.09)x10(-6), and B(B-0 ->eta(')omega)=(1.01(-0.38)(+0.46)+/- 0.09)x10(-6), where the first (second) uncertainty is statistical (systematic). For the B+->eta K+ decay mode, we measure the charge asymmetry A(ch)(B+->eta K+)=-0.36 +/- 0.11 +/- 0.03.

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
Date: December 2009
Volume: Vol.80
Number: No.11
Number of Pages: 11
Page Range: article no. 112002
Identification Number: 10.1103/PhysRevD.80.112002
Status: Peer Reviewed
Publication Status: Published
Funder: U. S. Department of Energy, National Science Foundation, Natural Sciences and Engineering Research Council (Canada), Commissariat a 'l'Energie Atomique, Institut National de Physique Nucleaire et de Physique des Particules (France), Bundesministerium fur Bildung und Forschung, Deutsche Forschungsgemeinschaft (Germany), Istituto Nazionale di Fisica Nucleare (Italy), Foundation for Fundamental Research on Matter, 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), European Union, A. P. Sloan Foundation
URI: http://wrap.warwick.ac.uk/id/eprint/16672

Data sourced from Thomson Reuters' Web of Knowledge

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