Gravitational Wave Probe of High Supersymmetry Breaking Scale

TL;DR

This paper proposes using future gravitational wave observations to test high-scale supersymmetry breaking scenarios, which are difficult to verify with collider experiments, by detecting primordial GWs linked to heavy scalar particles.

Contribution

It introduces a novel method to probe high scalar mass scales in supersymmetry through primordial gravitational wave signals, complementing collider searches.

Findings

Future GW experiments like DECIGO and BBO can detect signals from scalar masses of 10^3-10^4 TeV.

The scenario predicts a large amplitude of primordial GWs compatible with Higgs mass observations.

This approach offers a new way to test high-scale supersymmetry indirectly.

Abstract

A supersymmetric standard model with heavier scalar particles is very interesting from various viewpoints, especially Higgs properties. If the scalar mass scale is O(10-10^4) TeV, the standard model-like Higgs with mass around 125 GeV, which is implied by the recent LHC experiments, is predicted. However this scenario is difficult to be directly tested with collider experiments. In this paper, we propose a test of this scenario by using observations of primordial gravitational waves (GWs). The future GW experiments such as DECIGO and BBO can probe the scalar mass around O(10^3-10^4) TeV, which is preferred from the Higgs mass about 125 GeV, if the primordial GWs have large amplitude.