Article

Search for B -> phi pi decays

06/2012;
Source: arXiv

ABSTRACT We report on a search for the charmless decays $B^{+} \to\phi\pi^{+}$ and
$B^{0} \to\phi \pi^{0}$ that are strongly suppressed in the Standard Model. The
analysis is based on a data sample of $657 \times 10^6$ $B \bar{B}$ pairs
collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB
asymmetric-energy $e^+ e^-$ collider. We find no significant signal and set
upper limits of $3.3 \times 10^{-7}$ for $B^{+} \to \phi \pi^{+}$ and $1.5
\times 10^{-7}$ for $B^0 \to \phi \pi^0$ at the 90% confidence level.

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