Search for the suppressed decays $B^{+}\rightarrow K^{+}K^{+}\pi^{-}$ and $B^{+}\rightarrow \pi^{+}\pi^{+}K^{-}$

TL;DR

This study searches for highly suppressed B meson decays into specific three-body final states using LHCb data, setting new upper limits on their branching fractions due to no observed evidence.

Contribution

First search for these rare B+ decay modes with LHCb data, establishing the most stringent upper limits to date on their branching fractions.

Findings

No evidence for the decays was observed.

Upper limits on branching fractions were set at 1.1×10⁻⁸ and 4.6×10⁻⁸.

Results improve constraints on rare B meson decay processes.

Abstract

A search is made for the highly-suppressed B meson decays $B^{+}\rightarrow K^{+}K^{+}\pi^{-}$ and $B^{+}\rightarrow \pi^{+}\pi^{+}K^{-}$ using a data sample corresponding to an integrated luminosity of 3.0 $fb^{-1}$ collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. No evidence is found for the decays, and upper limits at 90\% confidence level are determined to be $\mathcal{B}(B^{+}\rightarrow K^{+}K^{+}\pi^{-}) < 1.1\times 10^{-8}$ and $\mathcal{B}(B^{+}\rightarrow \pi^{+}\pi^{+}K^{-}) < 4.6\times 10^{-8}$.