Phenomenology of spinless adjoints in two Universal Extra Dimensions

TL;DR

This paper explores the properties, interactions, and potential collider signatures of $(1,1)$-mode adjoint scalars in two Universal Extra Dimensions, including their decay modes and production mechanisms at the LHC.

Contribution

It provides a detailed phenomenological analysis of KK-number violating operators and decay widths for adjoint scalars in 2UED, a novel aspect of extra-dimensional models.

Findings

Calculated decay widths for adjoint scalars.

Estimated production rates at the LHC.

Analyzed KK-number violating interactions.

Abstract

We discuss the phenomenology of $(1,1)$-mode adjoint scalars in the framework of two Universal Extra Dimensions. The Kaluza-Klein (KK) towers of these adjoint scalars arise in the 4-dimensional effective theory from the 6th component of the gauge fields after compactification. Adjoint scalars can have KK-number conserving as well as KK-number violating interactions. We calculate the KK-number violating operators involving these scalars and two Standard Model fields. Decay widths of these scalars into different channels have been estimated. We have also briefly discussed pair-production and single production of such scalars at the Large Hadron Collider.