# Extra dimension of space-time exposed by anomalies at low energy

## TL;DR

This paper proposes an extended space-time with a discrete extra dimension, leading to new particles and interactions that explain recent anomalies and are testable at current energy scales.

## Contribution

It introduces a novel model of space-time with a two-point extra dimension and predicts new particles and interactions consistent with experimental anomalies.

## Key findings

- Presence of a new vector boson X17 with 17 MeV mass
- Existence of a scalar boson H with mass between 0.5 and 793 keV
- Potential for observable phenomenological consequences at accessible energies

## Abstract

Recent experimental observations are shown to be quantitatively consistent with an extended concept of space-time having a discrete extra dimension of two points at the distance of 11.8 fm together with a nontrivial metric structure. In such a space-time, fermions appear in pair with their Kaluza-Klein siblings. The usual electromagnetic field is accompanied with a new vector boson $X17$, which receives a mass of $17~MeV$ from another Kaluza-Klein partner, a scalar boson $H$ of a mass in the range of $0.5-793~keV$ via an abelian Higgs mechanism. At a low energy scale, where nucleons can be treated as structureless in a good approximation, the natural particle model involving nucleons, electron, neutrino and their Kaluza-Klein partners coupled to the electromagnetic field and the massive vector boson $X7$ can lead to new phenomenological consequences, which are verifiable at the currently accessible energy.