B meson decays to charmless meson pairs containing η or η' mesons
Name
PhysRevD.80.112002.pdf
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Author(s)
Cowan, Ray F
Dujmic, Denis
Fisher, Peter H
Henderson, Shawn Wesley
Sciolla, Gabriella
Spitznagel, Michael A
Yamamoto, R. K.
Zhao, M.
Date Issued
December 2009
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Aubert, B., et al. “B Meson Decays to Charmless Meson Pairs Containing η or η ′ Mesons.” Physical Review D, vol. 80, no. 11, Dec. 2009. © 2009 American Physical Society
Version
Final published version
Abstract
We present updated measurements of the branching fractions for B[superscript 0] meson decays to ηK[superscript 0], ηη, ηφ, ηω, η′K[superscript 0], η′η′, η′φ, and η′ω, and branching fractions and CP-violating charge asymmetries for B[superscript +] decays to ηπ[superscript +], ηK[superscript +], η′π[superscript +], and η′K[superscript +]. The data represent the full data set of 467×10[superscript 6] BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B[superscript 0]→η′K[superscript 0], we find evidence for three B[superscript 0] decay modes at greater than 3.0σ significance. We find B(B[superscript 0]→ηK[superscript 0])=(1.15[subscript -0.38][superscript +0. 43] ±0.09)×10[superscript -6], B(B[superscript 0]→ηω)=(0.94[subscript -0.30][superscript +0.35] ± 0.09) ×10[superscript -6], and B(B[superscript 0]→η′ω)=(1.01[subscript -0.38][superscript +0.46] ± 0.09) ×10[superscript -6], where the first (second) uncertainty is statistical (systematic). For the B[superscript +]→ηK[superscript +] decay mode, we measure the charge asymmetry A[subscript ch](B[superscript +]→ηK[superscript +])=-0.36±0.11 ± 0.03. © 2009 The American Physical Society.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.80.112002
