Double-Lepton Polarization Asymmetries and Polarized Forward Backward Asymmetries in the Rare b \to s \ell^+ \ell^- Decays in a Single Universal Extra Dimension Scenario

TL;DR

This paper investigates how double-lepton polarization asymmetries and forward-backward asymmetries in rare b to s lepton decays are affected by a universal extra dimension model, focusing on the sensitivity to the extra dimension's size.

Contribution

It introduces an analysis of polarization asymmetries in rare B decays within a universal extra dimension framework, highlighting their dependence on the compactification radius R.

Findings

Asymmetries are sensitive to the extra dimension parameter R.

Potential to distinguish new physics effects from Standard Model predictions.

Provides a way to probe extra dimensions through B decay observables.

Abstract

We study the double-lepton polarization asymmetries and single and double-lepton polarization forward backward asymmetries of the rare b \to s \ell^+ \ell^- mode within the Standard Model and in the Appelquist-Cheng-Dobrescu model, which is a new physics scenario with a single universal extra dimension. In particular, we examine the sensitivity of the observables to the radius R of the compactified extra-dimension, which is the new parameter in this new physics model.