The NMSSM with m_h > 115 GeV and a moderate stop mass

TL;DR

This paper explores the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a Higgs mass above 115 GeV, moderate stop masses, and near-perturbative coupling, analyzing its parameter space, spectrum, and phenomenology.

Contribution

It provides a detailed analysis of the NMSSM with specific coupling and mass constraints, highlighting the viable parameter space and potential experimental signatures.

Findings

Allowed parameter space identified respecting LEP2 bounds

Spectrum includes relatively light new particles

Implications for collider phenomenology discussed

Abstract

We study the generic NMSSM with the coupling \lambda S H_1 H_2 at the limit of perturbativity, \lambda~0.7-0.8, and a moderate stop mass, m_{\tilde{t}} < 300 GeV. Respecting the LEP2 bounds and insisting on naturalness, we delimit the allowed region of parameter space and we study the spectrum and phenomenology of the relatively light new particles.