Disentangling the Unparticles with polarized beams at e+e- colliders

TL;DR

This paper explores how polarized beams at future e+e- colliders can distinguish unparticle effects and their Lorentz structures, leveraging beam polarization to understand the complex phase and spin characteristics of unparticles.

Contribution

It demonstrates a method to identify unparticle properties and their Lorentz structures using beam polarization at the ILC, providing a new approach to probe scale-invariant sectors.

Findings

Polarization options help differentiate unparticle operators.

Beam polarization reveals the complex phase of unparticle propagators.

Method distinguishes unparticle spins and Lorentz structures.

Abstract

Recently proposed idea of unparticles arising due to a scale invariant sector in the theory can give rise to effective operators with different Lorentz structures. We show that by using the different polarization options at the future linear e+e- colliders, the nature of these effective operators can be easily understood. The unique feature of a complex phase in the propagator of the unparticle can also be understood uniquely for the different spins by exploiting the initial beam polarizations at the International Linear Collider (ILC).