B to strange tensor meson transition in a model with one universal extra dimension

TL;DR

This paper investigates how the presence of a universal extra dimension affects the semileptonic B to strange tensor meson transition, showing deviations from the Standard Model that could indicate extra dimensions.

Contribution

It introduces a detailed analysis of B to K2* transition observables within the universal extra dimension model, highlighting their sensitivity to the compactification scale.

Findings

Significant deviations in branching ratio for small 1/R

Altered polarization distributions due to extra dimension effects

Modified forward-backward asymmetry compared to Standard Model

Abstract

We analyze the semileptonic $B\to K_2^*(1430)l^+l^-$ transition in universal extra dimension model. In particular, we present the sensitivity of related observables such as branching ratio, polarization distribution and forward-backward asymmetry to the compactification factor (1/R) of extra dimension. The obtained results from extra dimension model show overall a considerable deviation from the standard model predictions for small values of the compactification factor. This can be considered as an indication for existence of extra dimensions.