Supersymmetry without a light Higgs boson at the LHC

TL;DR

This paper investigates the LHC detection prospects of a specific supersymmetric model, lambdaSUSY, featuring a 200-300 GeV Higgs and heavier Higgs bosons, demonstrating potential for discovery with current data.

Contribution

It provides a detailed analysis of lambdaSUSY's Higgs spectrum and proposes viable decay channels for discovering heavy Higgs bosons at the LHC.

Findings

Heavy Higgs bosons H and A can be discovered with over 5sigma significance.

Decay channels H->hh->4V->2l6j and A->Zh->Z2V->2l4j are promising for detection.

Discovery is feasible with 100 inverse fb of data.

Abstract

We analyze the LHC phenomenology of lambdaSUSY - a version of NMSSM with a largish SH1H2 coupling. The scalar spectrum of the model contains a 200-300 GeV Higgs boson h with Standard-Model like properties, and heavy CP-even and CP-odd Higgs bosons H and A with masses in 500-800 GeV range. We study the discovery potential of H and A in the decay chains H->hh->4V->2l6j and A->Zh->Z2V->2l4j. The dominant backgrounds are the diffuse Z6j and Z4j productions, which can be suppressed by demanding reconstruction of V's and h's in intermediate states. The excess of signal events allows for a discovery of both H and A with over 5sigma significance for 100 inverse fb of integrated luminosity.