Phenomenology of Universal Extra Dimensions with Bulk-Masses and Brane-Localized Terms

TL;DR

This paper develops a comprehensive model of universal extra dimensions incorporating bulk fermion masses and brane-localized terms, analyzing their effects on particle spectra, interactions, and experimental constraints from collider, electroweak, and dark matter data.

Contribution

It introduces a general UED model with bulk masses and boundary terms, providing detailed spectra, interactions, and experimental bounds, expanding the understanding of extra-dimensional theories.

Findings

Constraints on bulk mass parameters from LHC data

Bounds on brane-localized terms from electroweak precision tests

Dark matter relic density limits on model parameters

Abstract

We present a general model with universal extra dimensions in the presence of the bulk fermion masses and boundary localized kinetic terms, which are generically allowed by symmetries of five dimensional gauge theory. We provide a comprehensive analysis for a general UED model, including Kaluza-Klein mass spectra, their interactions with the SM particles, and constraints from LHC, electroweak tests, and dark matter experiments. Finally we show current bounds on the size of allowed universal bulk mass and universal brane-localized terms.