Search for B+ -> phi pi+ and B0 -> phi pi0 Decays

TL;DR

This study searched for rare B meson decays into phi pi final states using a large data sample but found no significant signals, setting upper limits on their branching fractions.

Contribution

First search for B+ -> phi pi+ and B0 -> phi pi0 decays, establishing upper limits on their branching fractions with a large data sample.

Findings

No significant signals observed for the decays.

Upper limits set on branching fractions: BR(B+ -> phi pi+) < 2.4 x 10^{-7}.

BR(B0 -> phi pi0) < 2.8 x 10^{-7}.

Abstract

A search has been made for the decays B+ -> phi pi+ and B0->to phi pi0 in a data sample of approximately 232 x 10^6 B Bbar pairs recorded at the Upsilon(4S) resonance with the BaBar detector at the PEP-II B-meson Factory at SLAC. No significant signals have been observed, and therefore upper limits have been set on the branching fractions: BR(B+ ->phi pi+)<2.4 x 10^{-7} and BR(B0->phi pi0)<2.8 x 10^{-7} at 90% probability.