A gauge mediation scenario with hidden sector renormalization in MSSM

TL;DR

This paper explores how hidden sector effects in gauge-mediated supersymmetry breaking can significantly alter the superparticle mass spectrum, potentially leading to long-lived charged particles detectable in collider experiments.

Contribution

It introduces a model where hidden sector renormalization impacts scalar masses, resulting in a unique superparticle hierarchy with observable collider signatures.

Findings

Hidden sector contributions reduce soft scalar masses.

Stau can become the next lightest superparticle.

Long-lived charged superparticles may be detectable in experiments.

Abstract

We study the hidden sector effects to the mass renormalization of a simplest gauge-mediated supersymmetry breaking scenario. We point out that possible hidden sector contributions render the soft scalar masses smaller, resulting in drastically different sparticle mass spectrum at low energy. In particular, in the ${\bf 5}+\bar{\bf 5}$ minimal gauge mediated supersymmetry breaking with high messenger scale (that is favored by the gravitino cold dark matter scenario), we show that stau can be the next lightest superparticle for moderate values of hidden sector self coupling. This provides a very simple theoretical model of long-lived charged next lightest superparticles, that imply distinctive signals in ongoing and upcoming collider experiments.