LHC and ILC Data and the Early Universe Properties

TL;DR

This paper discusses how combining LHC and ILC data with cosmological observations can help determine particle physics parameters and improve understanding of the early universe's properties, especially in the context of supersymmetry.

Contribution

It highlights the importance of collider and cosmological data integration for constraining early universe conditions and supersymmetric models.

Findings

Determining particle physics parameters aids understanding of early universe properties.

Relic density calculations are sensitive to hidden processes.

Combining collider and cosmological data constrains supersymmetric models.

Abstract

With the start-up of the LHC, we can hope to find evidences for new physics beyond the Standard Model, and particle candidates for dark matter. Determining the parameters of the full underlying theory will be a long process requiring the combination of LHC and ILC data, flavor physics constraints, and cosmological observations. However, the Very Early Universe properties, from which the relic particles originate, are poorly known, and the relic density calculation can be easily falsified by hidden processes. We consider supersymmetry and show that determining the underlying particle physics parameters will help understanding the Very Early Universe properties.