Unparticle Effects on Top Quark Spin Correlations in e^+e^- Collision

TL;DR

This paper explores how scalar and vector unparticles influence top quark spin correlations in electron-positron collisions, revealing significant deviations from Standard Model predictions due to unparticle contributions.

Contribution

It introduces the impact of unparticle physics on top quark spin correlations, highlighting their potential to cause measurable deviations in e+e- collision outcomes.

Findings

Unparticle contributions significantly alter top quark spin correlations.

Scalar and vector unparticles introduce new s-channel processes.

Deviations from Standard Model predictions are substantial.

Abstract

We investigate the effects of scalar and vector unparticles on top quark spin correlations via the process $e^{+}e^{-}\to t \bar{t}$. In addition to the Standard Model diagrams, there is a new contribution to top-antitop quark production process mediated by unparticle in the s-channel. It is shown that scalar and vector unparticle contribution leads to a considerable deviation of the top spin correlations from the Standard Model one.