Looking up at seesaw and GUT scales from TeV

TL;DR

This paper explores how combining data from various experiments at the TeV scale can provide indirect evidence for physics at the seesaw and GUT scales, supporting grand unification and leptogenesis theories.

Contribution

It proposes a comprehensive approach to infer high-scale physics phenomena from low-energy experimental data, integrating multiple experimental results.

Findings

Potential indirect evidence for grand unification from TeV-scale data

Support for the seesaw mechanism based on experimental observations

Implications for leptogenesis from combined experimental data

Abstract

In this talk, I discuss how we may approach physics at the seesaw- and GUT-scales using data from the TeV scale. Even though we cannot hope to directly reach these energy scales using particle accelerators, we may get convinced of grand unification and seesaw mechanism based on experimental data if Nature is kind to us. In addition, we may find compelling reason to believe in leptogenesis based on experimental data. This cannot be achieved by a single experiment, but rather a collection of them, based on LHC, ILC, neutrino oscillation, neutrinoless double beta decay, direct dark matter detection, CMB power spectrum and its tensor mode.