Searches for B0 decays to ηK0, ηη, η′η′, ηϕ, and η′ϕ

Aubert, B. et al. (2006) Searches for B0 decays to ηK0, ηη, η′η′, ηϕ, and η′ϕ. Physical Review D, 74 (5). 051106. ISSN 1550-7998

Abstract

We search for B0 meson decays into two-body combinations of K0, η, η′, and ϕ mesons in 324×106 BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC. We measure the following branching fractions (upper limits at 90% confidence level) in units of 10-6: B(B0→ηK0)=1.8-0.6+0.7±0.1(<2.9), B(B0→ηη)=1.1-0.4+0.5±0.1(<1.8), B(B0→ηϕ)=0.1±0.2±0.1(<0.6), B(B0→η′ϕ)=0.2-0.3+0.4±0.1(<1.0), and B(B0→η′η′)=1.0-0.6+0.8±0.1(<2.4), where the first error is statistical and the second systematic.

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