A Possible Cosmological Explanation of why Supersymmetry is hiding at the LHC

TL;DR

This paper proposes a cosmological reason for the absence of light scalar superpartners in LHC observations, suggesting that inflationary dynamics favor a mass pattern with heavy scalars and lighter fermionic superpartners to avoid fine-tuning issues.

Contribution

It introduces a cosmological explanation for the supersymmetric mass pattern, linking inflationary history to the non-observation of certain superpartners at the LHC.

Findings

Heavy scalar superpartners are favored by cosmological considerations.

The proposed scenario explains the current experimental absence of light scalar superpartners.

The model addresses fine-tuning issues in supersymmetric theories.

Abstract

If one is not ready to pay a large fine-tuning price within supersymmetric models given the current measurement of the Higgs boson mass, one can envisage a scenario where the supersymmetric spectrum is made of heavy scalar sparticles and much lighter fermionic superpartners. We offer a cosmological explanation of why nature might have chosen such a mass pattern: the opposite mass pattern is not observed experimentally because it is not compatible with the plausible idea that the universe went through a period of primordial inflation.