Domain-Wall Standard Model in non-compact 5D and LHC phenomenology

TL;DR

This paper introduces a non-compact 5D framework where the Standard Model fields are localized in specific domains, leading to a 4D effective theory, and explores its collider phenomenology and LHC constraints.

Contribution

It presents a novel non-compact 5D model with localized SM fields and analyzes its implications for collider experiments and gauge boson KK modes.

Findings

KK gauge boson couplings depend on fermion localization

Model can be tested at future LHC runs

Current LHC data constrains KK gauge boson properties

Abstract

We propose a framework to construct "Domain-Wall Standard Model" in a non compact 5-dimensional space-time, where all the Standard Model (SM) fields are localized in certain domains of the 5th dimension and the SM is realized as a 4-dimensional effective theory without any compactification for the 5th dimension. In this context, we investigate the collider phenomenology of the Kaluza-Klein (KK) modes of the SM gauge bosons and the current constraints from the search for a new gauge boson resonance at the LHC Run-2. The couplings of the SM fermions with the KK-mode gauge bosons depend on the configuration of the SM fermions in the 5-dimensional bulk. This "geometry" of the model can be tested at the future Large Hadron Collider experiment, once a KK-mode of the SM gauge boson is discovered.