Bounds on Unparticles from the Higgs Sector

TL;DR

This paper investigates how couplings between unparticle sectors and the Higgs field in supersymmetric QCD can break scale invariance, making unparticles detectable mainly at high-energy colliders like the LHC.

Contribution

It provides bounds on unparticle effects from the Higgs sector and analyzes the conditions under which unparticle physics can be observed at colliders.

Findings

Low energy experiments are unlikely to detect unparticles.

High energy colliders offer the best prospects for observing unparticle effects.

Scale invariance breaking can be observed at collider experiments.

Abstract

We study supersymmetric QCD in the conformal window as a laboratory for unparticle physics, and analyze couplings between the unparticle sector and the Higgs sector. These couplings can lead to the unparticle sector being pushed away from its scale invariant fixed point. We show that this implies that low energy experiments will not be able to see unparticle physics, and the best hope of seeing unparticles is in high energy collider experiments such as the Tevatron and the LHC. We also demonstrate how the breaking of scale invariance could be observed at these experiments.