$b\to ss{\bar d} $ decay in Randall-Sundrum models

TL;DR

This paper investigates the rare $b o ss{ar d}$ decay within Randall-Sundrum models, revealing potential enhancements over the Standard Model predictions, which could signal new physics.

Contribution

It provides the first detailed analysis of the $b o ss{ar d}$ decay in Randall-Sundrum models, including custodially protected and bulk-Higgs variants.

Findings

Decay rate can be enhanced by up to two orders of magnitude.

Parameter space analysis identifies regions with significant deviations from the Standard Model.

Potential for experimental detection of new physics signals.

Abstract

The extremely small branching ratio of $b\to ss{\bar d}$ decay in the Standard Model makes it a suitable channel to explore new-physics signals. We study this $\Delta S=2$ process in Randall-Sundrum models, including the custodially protected and the bulk-Higgs Randall-Sundrum models. Exploring the experimentally favored parameter spaces of these models, it suggests a possible enhancement of the decay rate, compared to the Standard Model result, by at most two orders of magnitude.