Colored Unparticles

TL;DR

This paper explores the production of colored unparticles at the LHC, demonstrating how their cross sections relate to standard particles and confirming the theoretical predictions through detailed calculations.

Contribution

It introduces a simple relation for scalar unparticle production cross sections mediated by gauge interactions, supported by explicit Feynman diagram analysis.

Findings

The unparticle production cross section scales as (2-d) times the standard particle case.

Explicit calculations confirm the theoretical relation involving non-trivial diagram cancellations.

Provides a framework for understanding colored unparticle phenomenology at colliders.

Abstract

We examine a scenario where the new physics at the LHC includes an approximate conformal field theory, where some of the degrees of freedom (aka "unparticles") carry a color charge. We present a simple argument showing that the production cross section for scalar unparticles mediated by a gauge interaction is given by (2-d) times the standard particle expression, where d is the scaling dimension of the unparticle field. We explicitly check that this is indeed the case, which involves non trivial cancellations between different Feynman diagrams, for the process q qbar to scalar unparticles.