We search for B0 meson decays into two-body combinations of K0, η, η′, and mesons in 324×106 BB̄ 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→η)=0. 1±0.2±0.1(<0.6), B(B0→η′)=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.

Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2006). Searches for B0 decays to ηk0, ηη, η′η′, η, and η′. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 74(5) [10.1103/PhysRevD.74.051106].

Searches for B0 decays to ηk0, ηη, η′η′, η, and η′

CARPINELLI, Massimo;
2006

Abstract

We search for B0 meson decays into two-body combinations of K0, η, η′, and mesons in 324×106 BB̄ 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→η)=0. 1±0.2±0.1(<0.6), B(B0→η′)=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.
Articolo in rivista - Articolo scientifico
BABAR detector
English
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2006). Searches for B0 decays to ηk0, ηη, η′η′, η, and η′. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 74(5) [10.1103/PhysRevD.74.051106].
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