Branching Fraction Limits for B0 Decays to eta' eta, eta' pi0 and eta pi0

TL;DR

This paper reports on searches for rare B0 meson decays into eta' eta, eta' pi0, and eta pi0 final states, setting upper limits on their branching fractions based on data from the BaBar experiment.

Contribution

The study provides the first experimental upper limits on branching fractions for these specific B0 decay modes, improving understanding of charmless B meson decays.

Findings

No significant signals observed for the decay modes.

Upper limits on branching fractions are set at 1.3 to 2.1 x 10^-6.

Results constrain theoretical models of B meson decay processes.

Abstract

We describe searches for decays to two-body charmless final states eta' eta, eta' pi0 and eta pi0 of B0 mesons produced in e+e- annihilation. The data, collected with the BaBar detector at the Stanford Linear Accelerator Center, represent 232 million produced B-anti-B pairs. The results for branching fractions are, in units of 10^-6 (upper limits at 90% C.L.): BF(B0 -> eta' eta) = 0.2 +0.7 -0.5 +/- 0.4 (<1.7), BF(B0 -> eta pi0) = 0.6 +0.5 -0.4 +/- 0.1 (<1.3), and BF(B0 -> eta' pi0) = 0.8 +0.8 -0.6 +/- 0.1 (<2.1). The first error quoted is statistical and the second systematic.