Search for new Physics in rare B Decays

TL;DR

This paper reports a search for rare B meson decays into specific final states using LEP data, setting upper limits on their branching ratios to test for physics beyond the Standard Model.

Contribution

It provides the first experimental upper limit on the branching ratio of B+- to K+-K+-pi-+ decays, constraining supersymmetric models with R-parity violation.

Findings

No evidence for the decay was observed.

A 90% confidence level upper limit of 1.29x10^-4 was established.

Results constrain new physics scenarios beyond the Standard Model.

Abstract

A search for the decay B+- to K+-K+-pi-+ was performed using data collected by the OPAL detector at LEP. These decays are strongly suppressed in the Standard Model but could occur with a higher branching ratio in supersymmetric models, especially in those with R-parity violating couplings. No evidence for a signal was observed and a 90% confidence level upper limit of 1.29x10^-4 was set for the branching ratio.