A Search for Charmless $B\to VV$ Decays

TL;DR

This study searches for rare charmless two-body $B$ meson decays into vector mesons, setting upper limits on their branching fractions using data from the CLEO detector, contributing to understanding of $B$ decay processes.

Contribution

First to set experimental upper limits on several charmless $B o VV$ decay modes with charged particles using CLEO data.

Findings

Placed 90% confidence level upper limits on branching fractions.

No significant signals observed for the decay modes.

Limits range from $0.46$ to $7.0 imes 10^{-5}$.

Abstract

We have studied two-body charmless decays of the $B$ meson into the final states $\rho^0 \rho^0$, $K^{*0} \rho^0$, $K^{*0} K^{*0}$, $K^{*0} \bar{K^{*0}}$, $K^{*+} \rho^0$, $K^{*+} \bar{K^{*0}}$, and $K^{*+} K^{*-}$ using only decay modes with charged daughter particles. Using 9.7 million $B \bar{B}$ pairs collected with the CLEO detector, we place 90% confidence level upper limits on the branching fractions, $(0.46-7.0)\times 10^{-5}$, depending on final state and polarization.