Higgs Sector in Anomaly-Mediated Supersymmetry Breaking Scenario

TL;DR

This paper explores the Higgs sector within the anomaly-mediated supersymmetry breaking model, analyzing how current and future collider experiments can test and potentially confirm this theoretical framework.

Contribution

It provides a detailed analysis of the Higgs spectrum and couplings in the AMSB scenario, linking model parameters to experimental search prospects.

Findings

LEP bounds exclude some parameter regions for small 

Tevatron Run II can exclude entire parameter space if no Higgs is found

Higgs discovery is possible at Tevatron and LHC with sufficient luminosity

Abstract

In the minimal anomaly-mediated supersymmetry breaking (AMSB) model, a universal contribution $m_{0}$ to all the scalar masses is introduced in order to avoid the negative slepton mass problem. The Higgs spectrum and couplings are determined by four parameters: $m_{\rm aux}, m_{0}, \tan\beta$ and sign ($\mu$). The sign of $\mu$ affects $m_A$ at large $\tan\beta$ and $m_h$ at small $\tan\beta$. The CP-odd Higgs mass $m_A$ is usually much larger than ${m}_{Z}$ and the lightest CP-even Higgs is simply analogous to the one in the standard model. The current and future Higgs searches in LEP, Tevatron and LHC provide a test ground for the AMSB scenario. The current LEP bounds and LEP 192/196 preliminary results have already excluded a small $m_{0}$ and $m_{\rm aux}$ region for small $\tan\beta$. While the entire parameter space will be excluded if no Higgs is found at Tevatron RUN II with 2 ${\rm fb}^{-1}$ luminosity. However, if the AMSB scenario is true, a Higgs can be found at 5$\sigma$ significance level at both Tevatron running at luminosity 10 ${\rm fb}^{-1}$ or higher and LHC.